21037876008 has 64 divisors (see below), whose sum is σ = 55391304000. Its totient is φ = 6640123392.

The previous prime is 21037875977. The next prime is 21037876019. The reversal of 21037876008 is 80067873012.

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, 963678 + ... + 985266.

It is an arithmetic number, because the mean of its divisors is an integer number (865489125).

Almost surely, 2^21037876008 is an apocalyptic number.

It is an amenable number.

21037876008 is an abundant number, since it is smaller than the sum of its proper divisors (34353427992).

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

21037876008 is a wasteful number, since it uses less digits than its factorization.

21037876008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23754 (or 23750 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 42.

The spelling of 21037876008 in words is "twenty-one billion, thirty-seven million, eight hundred seventy-six thousand, eight".