A Octosexagintaducentillion (1 Octosexagintaducentillion) is 10 to the power of 807 (10^807). This is a tremendously astronomical number!

## How many zeros in a Octosexagintaducentillion?

There are 807 zeros in a Octosexagintaducentillion.

## What's before Octosexagintaducentillion?

A Septensexagintaducentillion is smaller than a Octosexagintaducentillion.

## What's after Octosexagintaducentillion?

A Novensexagintaducentillion is larger than a Octosexagintaducentillion.

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

## Is Octosexagintaducentillion the largest number?

Octosexagintaducentillion 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.

## Octosexagintaducentillion written out

Octosexagintaducentillion 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

## Big Numbers

This is just one of many really big numbers!