12499564264 has 24 divisors (see below), whose sum is σ = 25760984130. Its totient is φ = 5681619680.

The previous prime is 12499564243. The next prime is 12499564277. The reversal of 12499564264 is 46246599421.

It can be written as a sum of positive squares in only one way, i.e., 10514861764 + 1984702500 = 102542^2 + 44550^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6455419 + ... + 6457354.

Almost surely, 2^12499564264 is an apocalyptic number.

It is an amenable number.

12499564264 is an abundant number, since it is smaller than the sum of its proper divisors (13261419866).

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

12499564264 is a wasteful number, since it uses less digits than its factorization.

12499564264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12912801 (or 12912786 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 52.

The spelling of 12499564264 in words is "twelve billion, four hundred ninety-nine million, five hundred sixty-four thousand, two hundred sixty-four".