12642513336 has 48 divisors (see below), whose sum is σ = 34361185560. Its totient is φ = 4199273280.

The previous prime is 12642513319. The next prime is 12642513347. The reversal of 12642513336 is 63331524621.

12642513336 is a `hidden beast` number, since 1 + 2 + 642 + 5 + 1 + 3 + 3 + 3 + 6 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 12642513336.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 289855 + ... + 330606.

Almost surely, 2^12642513336 is an apocalyptic number.

It is an amenable number.

12642513336 is an abundant number, since it is smaller than the sum of its proper divisors (21718672224).

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

12642513336 is a wasteful number, since it uses less digits than its factorization.

12642513336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620756 (or 620749 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The spelling of 12642513336 in words is "twelve billion, six hundred forty-two million, five hundred thirteen thousand, three hundred thirty-six".