What is after a pictobyte?

Answer 1

After a pictobyte comes an exabyte. A pictobyte is a unit of digital information equal to 10^45 bytes, while an exabyte is equal to 10^18 bytes. In the hierarchy of data storage units, the exabyte is 1,000,000,000,000,000,000 bytes larger than a pictobyte.

Answer 2

Currently a pictobyte has not been decided as the definite name.

If they to add the name then it would be the largest named single unit of data