A Duotrigintaducentillion (1 Duotrigintaducentillion) is 10 to the power of 699 (10^699). This is a stupendously astronomical number!

## How many zeros in a Duotrigintaducentillion?

There are 699 zeros in a Duotrigintaducentillion.

## What's before Duotrigintaducentillion?

A Untrigintaducentillion is smaller than a Duotrigintaducentillion.

## What's after Duotrigintaducentillion?

A Trestrigintaducentillion is larger than a Duotrigintaducentillion.

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

## Is Duotrigintaducentillion the largest number?

Duotrigintaducentillion 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.

## Duotrigintaducentillion written out

Duotrigintaducentillion 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

## Big Numbers

This is just one of many really big numbers!