12643604004 has 48 divisors (see below), whose sum is σ = 31247330688. Its totient is φ = 3965326848.

The previous prime is 12643603957. The next prime is 12643604023. The reversal of 12643604004 is 40040634621.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 760242 + ... + 776694.

It is an arithmetic number, because the mean of its divisors is an integer number (650986056).

Almost surely, 2^12643604004 is an apocalyptic number.

It is an amenable number.

12643604004 is an abundant number, since it is smaller than the sum of its proper divisors (18603726684).

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

12643604004 is a wasteful number, since it uses less digits than its factorization.

12643604004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20244 (or 20242 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The spelling of 12643604004 in words is "twelve billion, six hundred forty-three million, six hundred four thousand, four".