12641574744 has 40 divisors (see below), whose sum is σ = 35408116260. Its totient is φ = 4213858032.

The previous prime is 12641574721. The next prime is 12641574763. The reversal of 12641574744 is 44747514621.

12641574744 is a `hidden beast` number, since 1 + 2 + 6 + 4 + 1 + 574 + 74 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 12641574744.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 9753654 + ... + 9754949.

Almost surely, 2^12641574744 is an apocalyptic number.

It is an amenable number.

12641574744 is an abundant number, since it is smaller than the sum of its proper divisors (22766541516).

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

12641574744 is a wasteful number, since it uses less digits than its factorization.

12641574744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19508621 (or 19508608 counting only the distinct ones).

The product of its digits is 752640, while the sum is 45.

The spelling of 12641574744 in words is "twelve billion, six hundred forty-one million, five hundred seventy-four thousand, seven hundred forty-four".