20020012008 has 32 divisors (see below), whose sum is σ = 50164065600. Its totient is φ = 6658132608.

The previous prime is 20020011997. The next prime is 20020012013. The reversal of 20020012008 is 80021002002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 939541 + ... + 960612.

It is an arithmetic number, because the mean of its divisors is an integer number (1567627050).

Almost surely, 2^20020012008 is an apocalyptic number.

It is an amenable number.

20020012008 is an abundant number, since it is smaller than the sum of its proper divisors (30144053592).

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

20020012008 is a wasteful number, since it uses less digits than its factorization.

20020012008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1900601 (or 1900597 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The spelling of 20020012008 in words is "twenty billion, twenty million, twelve thousand, eight".