12645022956 has 48 divisors (see below), whose sum is σ = 31071922560. Its totient is φ = 3991368960.

The previous prime is 12645022933. The next prime is 12645023059. The reversal of 12645022956 is 65922054621.

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, 551236 + ... + 573716.

It is an arithmetic number, because the mean of its divisors is an integer number (647331720).

Almost surely, 2^12645022956 is an apocalyptic number.

It is an amenable number.

12645022956 is an abundant number, since it is smaller than the sum of its proper divisors (18426899604).

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

12645022956 is a wasteful number, since it uses less digits than its factorization.

12645022956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24974 (or 24972 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 12645022956 in words is "twelve billion, six hundred forty-five million, twenty-two thousand, nine hundred fifty-six".