12566224044 has 72 divisors (see below), whose sum is σ = 34668138960. Its totient is φ = 3806208000.

The previous prime is 12566224039. The next prime is 12566224057. The reversal of 12566224044 is 44042266521.

12566224044 is a `hidden beast` number, since 1 + 25 + 6 + 622 + 4 + 0 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1058944 + ... + 1070744.

It is an arithmetic number, because the mean of its divisors is an integer number (481501930).

Almost surely, 2^12566224044 is an apocalyptic number.

It is an amenable number.

12566224044 is an abundant number, since it is smaller than the sum of its proper divisors (22101914916).

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

12566224044 is a wasteful number, since it uses less digits than its factorization.

12566224044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14511 (or 14506 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The spelling of 12566224044 in words is "twelve billion, five hundred sixty-six million, two hundred twenty-four thousand, forty-four".