15902864879 has 16 divisors (see below), whose sum is σ = 18001146240. Its totient is φ = 13916364000.

The previous prime is 15902864867. The next prime is 15902864899. The reversal of 15902864879 is 97846820951.

It is a de Polignac number, because none of the positive numbers 2^k-15902864879 is a prime.

It is a super-2 number, since 2×15902864879² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15902864839) 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 15 ways as a sum of consecutive naturals, for example, 30284 + ... + 180894.

It is an arithmetic number, because the mean of its divisors is an integer number (1125071640).

Almost surely, 2^15902864879 is an apocalyptic number.

15902864879 is a deficient number, since it is larger than the sum of its proper divisors (2098281361).

15902864879 is a wasteful number, since it uses less digits than its factorization.

15902864879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150982.

The product of its (nonzero) digits is 8709120, while the sum is 59.

The spelling of 15902864879 in words is "fifteen billion, nine hundred two million, eight hundred sixty-four thousand, eight hundred seventy-nine".