12165931904 has 32 divisors (see below), whose sum is σ = 27699222000. Its totient is φ = 5213970432.

The previous prime is 12165931861. The next prime is 12165931979. The reversal of 12165931904 is 40913956121.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6788129 + ... + 6789920.

Almost surely, 2^12165931904 is an apocalyptic number.

12165931904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12165931904 is an abundant number, since it is smaller than the sum of its proper divisors (15533290096).

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

12165931904 is an equidigital number, since it uses as much as digits as its factorization.

12165931904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13578070 (or 13578058 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 41.

The spelling of 12165931904 in words is "twelve billion, one hundred sixty-five million, nine hundred thirty-one thousand, nine hundred four".