111660204156 has 24 divisors (see below), whose sum is σ = 263069998464. Its totient is φ = 36858707760.

The previous prime is 111660204013. The next prime is 111660204157. The reversal of 111660204156 is 651402066111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111660204157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45168750 + ... + 45171221.

It is an arithmetic number, because the mean of its divisors is an integer number (10961249936).

Almost surely, 2^111660204156 is an apocalyptic number.

It is an amenable number.

111660204156 is an abundant number, since it is smaller than the sum of its proper divisors (151409794308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111660204156 is a wasteful number, since it uses less digits than its factorization.

111660204156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90340081 (or 90340079 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The spelling of 111660204156 in words is "one hundred eleven billion, six hundred sixty million, two hundred four thousand, one hundred fifty-six".