20938966924 has 6 divisors (see below), whose sum is σ = 36643192124. Its totient is φ = 10469483460.

The previous prime is 20938966903. The next prime is 20938966981. The reversal of 20938966924 is 42966983902.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2617370862 + ... + 2617370869.

Almost surely, 2^20938966924 is an apocalyptic number.

It is an amenable number.

20938966924 is a deficient number, since it is larger than the sum of its proper divisors (15704225200).

20938966924 is a wasteful number, since it uses less digits than its factorization.

20938966924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5234741735 (or 5234741733 counting only the distinct ones).

The product of its (nonzero) digits is 10077696, while the sum is 58.

The spelling of 20938966924 in words is "twenty billion, nine hundred thirty-eight million, nine hundred sixty-six thousand, nine hundred twenty-four".