21372313204 has 12 divisors (see below), whose sum is σ = 40801688928. Its totient is φ = 9714687800.

The previous prime is 21372313187. The next prime is 21372313217. The reversal of 21372313204 is 40231327312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242867152 + ... + 242867239.

It is an arithmetic number, because the mean of its divisors is an integer number (3400140744).

Almost surely, 2^21372313204 is an apocalyptic number.

It is an amenable number.

21372313204 is a deficient number, since it is larger than the sum of its proper divisors (19429375724).

21372313204 is a wasteful number, since it uses less digits than its factorization.

21372313204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485734406 (or 485734404 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 28.

The spelling of 21372313204 in words is "twenty-one billion, three hundred seventy-two million, three hundred thirteen thousand, two hundred four".