12564608432 has 10 divisors (see below), whose sum is σ = 24343928868. Its totient is φ = 6282304208.

The previous prime is 12564608339. The next prime is 12564608437. The reversal of 12564608432 is 23480646521.

It is a self number, because there is not a number n which added to its sum of digits gives 12564608432.

It is not an unprimeable number, because it can be changed into a prime (12564608437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 392643998 + ... + 392644029.

Almost surely, 2^12564608432 is an apocalyptic number.

It is an amenable number.

12564608432 is a deficient number, since it is larger than the sum of its proper divisors (11779320436).

12564608432 is an equidigital number, since it uses as much as digits as its factorization.

12564608432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785288035 (or 785288029 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 41.

The spelling of 12564608432 in words is "twelve billion, five hundred sixty-four million, six hundred eight thousand, four hundred thirty-two".