12644063044 has 12 divisors (see below), whose sum is σ = 22205299984. Its totient is φ = 6299691624.

The previous prime is 12644063009. The next prime is 12644063059. The reversal of 12644063044 is 44036044621.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5583702 + ... + 5585965.

Almost surely, 2^12644063044 is an apocalyptic number.

It is an amenable number.

12644063044 is a deficient number, since it is larger than the sum of its proper divisors (9561236940).

12644063044 is a wasteful number, since it uses less digits than its factorization.

12644063044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11169954 (or 11169952 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 34.

The spelling of 12644063044 in words is "twelve billion, six hundred forty-four million, sixty-three thousand, forty-four".