638852460204 has 48 divisors (see below), whose sum is σ = 1709626435328. Its totient is φ = 181884287808.

The previous prime is 638852460179. The next prime is 638852460223. The reversal of 638852460204 is 402064258836.

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, 13413307 + ... + 13460850.

Almost surely, 2^638852460204 is an apocalyptic number.

It is an amenable number.

638852460204 is an abundant number, since it is smaller than the sum of its proper divisors (1070773975124).

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

638852460204 is a wasteful number, since it uses less digits than its factorization.

638852460204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26874454 (or 26874452 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 48.

The spelling of 638852460204 in words is "six hundred thirty-eight billion, eight hundred fifty-two million, four hundred sixty thousand, two hundred four".