999,999,999,999,999,900,000,000,000,000,000,000,000,000 y
1 E (exa) is equal to 999,999,999,999,999,900,000,000,000,000,000,000,000,000 y (yocto). To convert from exa to yocto, multiply by 999,999,999,999,999,900,000,000,000,000,000,000,000,000 or divide by 0.000000000000000000000000000000000000000001.