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A Sedecillion (1 Sedecillion) is 10 to the power of 51 (10^51). This is a huge number!

How many zeros in a Sedecillion?

There are 51 zeros in a Sedecillion.

What's before Sedecillion?

A Quindecillion is smaller than a Sedecillion.

What's after Sedecillion?

A Septendecillion is larger than a Sedecillion.


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

Is Sedecillion the largest number?

Sedecillion 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.

Sedecillion written out

Sedecillion is written out as:


Big Numbers

This is just one of many really big numbers!

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