The adult human body is composed of nearly 37 trillion cells . 37 trillion in numbers is 37,000,000,000,000 or 37 x 10^12.

The adult human body is composed of nearly 37 trillion cells . 

37 trillion in numbers is 

37,000,000,000,000 

or 

37 x 10^12.

The adult human body is composed of nearly 37 trillion cells, each with potentially unique molecular characteristics. 

37 trillion in numbers is 37,000,000,000,000 or 37 x 10^12

Information source:

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6085824/#:~:text=The%20adult%20human%20body%20is,with%20potentially%20unique%20molecular%20characteristics.