A Nonagintaducentillion (1 Nonagintaducentillion) is 10 to the power of 873 (10^873). This is a truly astronomical number!

## How many zeros in a Nonagintaducentillion?

There are 873 zeros in a Nonagintaducentillion.

## What's before Nonagintaducentillion?

A Novemoctogintaducentillion is smaller than a Nonagintaducentillion.

## What's after Nonagintaducentillion?

A Unnonagintaducentillion is larger than a Nonagintaducentillion.

A Nonagintaducentillionaire is someone whos assets, net worth or wealth is 1 or more Nonagintaducentillion. It is unlikely anyone will ever be a true Nonagintaducentillionaire. If you want to be a Nonagintaducentillionaire, play Tap Tales!

## Is Nonagintaducentillion the largest number?

Nonagintaducentillion is not the largest number. Infinity best describes the largest possible number - if there even is one! We cannot comprehend what the largest number actually is.

## Nonagintaducentillion written out

Nonagintaducentillion is written out as:

1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000

## Big Numbers

This is just one of many really big numbers!