Create Free Account | Log In


A Sestrigintacentillion (1 Sestrigintacentillion) is 10 to the power of 411 (10^411). This is an excessively astronomical number!

How many zeros in a Sestrigintacentillion?

There are 411 zeros in a Sestrigintacentillion.

What's before Sestrigintacentillion?

A Quintrigintacentillion is smaller than a Sestrigintacentillion.

What's after Sestrigintacentillion?

A Septentrigintacentillion is larger than a Sestrigintacentillion.


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

Is Sestrigintacentillion the largest number?

Sestrigintacentillion 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.

Sestrigintacentillion written out

Sestrigintacentillion is written out as:


Big Numbers

This is just one of many really big numbers!

Play Now

Choose your device:

FREE to download and play!