156523136556 has 12 divisors (see below), whose sum is σ = 365220651992. Its totient is φ = 52174378848.

The previous prime is 156523136537. The next prime is 156523136563. The reversal of 156523136556 is 655631325651.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×156523136556² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6521797345 + ... + 6521797368.

Almost surely, 2^156523136556 is an apocalyptic number.

It is an amenable number.

156523136556 is an abundant number, since it is smaller than the sum of its proper divisors (208697515436).

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

156523136556 is a wasteful number, since it uses less digits than its factorization.

156523136556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13043594720 (or 13043594718 counting only the distinct ones).

The product of its digits is 2430000, while the sum is 48.

The spelling of 156523136556 in words is "one hundred fifty-six billion, five hundred twenty-three million, one hundred thirty-six thousand, five hundred fifty-six".