15115656156 has 24 divisors (see below), whose sum is σ = 35383281024. Its totient is φ = 5022349680.

The previous prime is 15115656119. The next prime is 15115656161. The reversal of 15115656156 is 65165651151.

It is a super-2 number, since 2×15115656156² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2021410 + ... + 2028873.

It is an arithmetic number, because the mean of its divisors is an integer number (1474303376).

Almost surely, 2^15115656156 is an apocalyptic number.

It is an amenable number.

15115656156 is an abundant number, since it is smaller than the sum of its proper divisors (20267624868).

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

15115656156 is a wasteful number, since it uses less digits than its factorization.

15115656156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4050601 (or 4050599 counting only the distinct ones).

The product of its digits is 135000, while the sum is 42.

The spelling of 15115656156 in words is "fifteen billion, one hundred fifteen million, six hundred fifty-six thousand, one hundred fifty-six".