20009292920 has 32 divisors (see below), whose sum is σ = 47390432400. Its totient is φ = 7582468608.

The previous prime is 20009292907. The next prime is 20009292959. The reversal of 20009292920 is 2929290002.

It is a congruent number.

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, 13163249 + ... + 13164768.

Almost surely, 2^20009292920 is an apocalyptic number.

20009292920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20009292920 is an abundant number, since it is smaller than the sum of its proper divisors (27381139480).

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

20009292920 is a wasteful number, since it uses less digits than its factorization.

20009292920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26328047 (or 26328043 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The spelling of 20009292920 in words is "twenty billion, nine million, two hundred ninety-two thousand, nine hundred twenty".