12639186960 has 80 divisors (see below), whose sum is σ = 39367331520. Its totient is φ = 3354462720.

The previous prime is 12639186929. The next prime is 12639186997. The reversal of 12639186960 is 6968193621.

It is a tau number, because it is divible by the number of its divisors (80).

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74155 + ... + 175434.

It is an arithmetic number, because the mean of its divisors is an integer number (492091644).

Almost surely, 2^12639186960 is an apocalyptic number.

12639186960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12639186960 is an abundant number, since it is smaller than the sum of its proper divisors (26728144560).

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

12639186960 is a wasteful number, since it uses less digits than its factorization.

12639186960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249816 (or 249810 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 51.

The spelling of 12639186960 in words is "twelve billion, six hundred thirty-nine million, one hundred eighty-six thousand, nine hundred sixty".