15872665564 has 12 divisors (see below), whose sum is σ = 31745331184. Its totient is φ = 6802570944.

The previous prime is 15872665561. The next prime is 15872665577. The reversal of 15872665564 is 46556627851.

15872665564 is an admirable number.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15872665561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283440429 + ... + 283440484.

Almost surely, 2^15872665564 is an apocalyptic number.

15872665564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

15872665564 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

15872665564 is a wasteful number, since it uses less digits than its factorization.

15872665564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566880924 (or 566880922 counting only the distinct ones).

The product of its digits is 12096000, while the sum is 55.

The spelling of 15872665564 in words is "fifteen billion, eight hundred seventy-two million, six hundred sixty-five thousand, five hundred sixty-four".