156388865496 has 72 divisors (see below), whose sum is σ = 395850907620. Its totient is φ = 51487066752.

The previous prime is 156388865489. The next prime is 156388865513. The reversal of 156388865496 is 694568883651.

It is a super-2 number, since 2×156388865496² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 156388865496.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 172423875 + ... + 172424781.

Almost surely, 2^156388865496 is an apocalyptic number.

It is an amenable number.

156388865496 is an abundant number, since it is smaller than the sum of its proper divisors (239462042124).

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

156388865496 is an frugal number, since it uses more digits than its factorization.

156388865496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001 (or 1001 counting only the distinct ones).

The product of its digits is 298598400, while the sum is 69.

The spelling of 156388865496 in words is "one hundred fifty-six billion, three hundred eighty-eight million, eight hundred sixty-five thousand, four hundred ninety-six".