What is the answer of antilog of 15.59?

Antilog 15.59 is the number whose logarithm is equal to 15.59. If y is the number whose logarithm is 15.59, then log y = 15.59. This is equivalent to y = 10^15.59. So we have:

antilog 15.59 = 10^15.59 = 3.89045145E15