## Duoseptuagintacentillion

A Duoseptuagintacentillion (1 Duoseptuagintacentillion) is 10 to the power of 519 (10^519). This is a stupendously astronomical number!

## How many zeros in a Duoseptuagintacentillion?

There are 519 zeros in a Duoseptuagintacentillion.

## What's before Duoseptuagintacentillion?

A Unseptuagintacentillion is smaller than a Duoseptuagintacentillion.

## What's after Duoseptuagintacentillion?

A Treseptuagintacentillion is larger than a Duoseptuagintacentillion.

## Duoseptuagintacentillionaire

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

## Is Duoseptuagintacentillion the largest number?

Duoseptuagintacentillion 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.

## Duoseptuagintacentillion written out

Duoseptuagintacentillion 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

## Big Numbers

This is just one of many really big numbers!