12638003604 has 24 divisors (see below), whose sum is σ = 29490931008. Its totient is φ = 4212345600.

The previous prime is 12638003603. The next prime is 12638003611. The reversal of 12638003604 is 40630083621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12638003603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164929 + ... + 229079.

It is an arithmetic number, because the mean of its divisors is an integer number (1228788792).

Almost surely, 2^12638003604 is an apocalyptic number.

It is an amenable number.

12638003604 is an abundant number, since it is smaller than the sum of its proper divisors (16852927404).

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

12638003604 is a wasteful number, since it uses less digits than its factorization.

12638003604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80575 (or 80573 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The spelling of 12638003604 in words is "twelve billion, six hundred thirty-eight million, three thousand, six hundred four".