0.000000000000000000000000000000000000000000000001 Y
1 y (yocto) is equal to 0.000000000000000000000000000000000000000000000001 Y (yotta). To convert from yocto to yotta, multiply by 0.000000000000000000000000000000000000000000000001 or divide by 1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000.