12665595936 has 48 divisors (see below), whose sum is σ = 37996789824. Its totient is φ = 3618741504.

The previous prime is 12665595913. The next prime is 12665595997. The reversal of 12665595936 is 63959556621.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9423135 + ... + 9424478.

It is an arithmetic number, because the mean of its divisors is an integer number (791599788).

Almost surely, 2^12665595936 is an apocalyptic number.

12665595936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12665595936 is an abundant number, since it is smaller than the sum of its proper divisors (25331193888).

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

12665595936 is a wasteful number, since it uses less digits than its factorization.

12665595936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18847633 (or 18847625 counting only the distinct ones).

The product of its digits is 13122000, while the sum is 57.

The spelling of 12665595936 in words is "twelve billion, six hundred sixty-five million, five hundred ninety-five thousand, nine hundred thirty-six".