12643603604 has 12 divisors (see below), whose sum is σ = 22437944928. Its totient is φ = 6232762200.

The previous prime is 12643603601. The next prime is 12643603607. The reversal of 12643603604 is 40630634621.

It is an interprime number because it is at equal distance from previous prime (12643603601) and next prime (12643603607).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12643603601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22259582 + ... + 22260149.

It is an arithmetic number, because the mean of its divisors is an integer number (1869828744).

Almost surely, 2^12643603604 is an apocalyptic number.

It is an amenable number.

12643603604 is a deficient number, since it is larger than the sum of its proper divisors (9794341324).

12643603604 is a wasteful number, since it uses less digits than its factorization.

12643603604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44519806 (or 44519804 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 35.

The spelling of 12643603604 in words is "twelve billion, six hundred forty-three million, six hundred three thousand, six hundred four".