12564046660 has 24 divisors (see below), whose sum is σ = 28783089216. Its totient is φ = 4568744160.

The previous prime is 12564046619. The next prime is 12564046661. The reversal of 12564046660 is 6664046521.

It is not an unprimeable number, because it can be changed into a prime (12564046661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28554432 + ... + 28554871.

It is an arithmetic number, because the mean of its divisors is an integer number (1199295384).

Almost surely, 2^12564046660 is an apocalyptic number.

12564046660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12564046660 is an abundant number, since it is smaller than the sum of its proper divisors (16219042556).

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

12564046660 is a wasteful number, since it uses less digits than its factorization.

12564046660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57109323 (or 57109321 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 12564046660 in words is "twelve billion, five hundred sixty-four million, forty-six thousand, six hundred sixty".