15151501656 has 80 divisors (see below), whose sum is σ = 42875919240. Its totient is φ = 4998412800.

The previous prime is 15151501637. The next prime is 15151501669. The reversal of 15151501656 is 65610515151.

It is a happy number.

15151501656 is a `hidden beast` number, since 1 + 51 + 51 + 501 + 6 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 15151501656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 57670 + ... + 183381.

Almost surely, 2^15151501656 is an apocalyptic number.

It is an amenable number.

15151501656 is an abundant number, since it is smaller than the sum of its proper divisors (27724417584).

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

15151501656 is a wasteful number, since it uses less digits than its factorization.

15151501656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241166 (or 241153 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 36.

The spelling of 15151501656 in words is "fifteen billion, one hundred fifty-one million, five hundred one thousand, six hundred fifty-six".