12644113264 has 20 divisors (see below), whose sum is σ = 24576247456. Its totient is φ = 6301855872.

The previous prime is 12644113259. The next prime is 12644113277. The reversal of 12644113264 is 46231144621.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1257384 + ... + 1267399.

Almost surely, 2^12644113264 is an apocalyptic number.

It is an amenable number.

12644113264 is a deficient number, since it is larger than the sum of its proper divisors (11932134192).

12644113264 is a wasteful number, since it uses less digits than its factorization.

12644113264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2525104 (or 2525098 counting only the distinct ones).

The product of its digits is 27648, while the sum is 34.

Adding to 12644113264 its reverse (46231144621), we get a palindrome (58875257885).

The spelling of 12644113264 in words is "twelve billion, six hundred forty-four million, one hundred thirteen thousand, two hundred sixty-four".