20019290920 has 32 divisors (see below), whose sum is σ = 46001779200. Its totient is φ = 7837338688.

The previous prime is 20019290911. The next prime is 20019290983. The reversal of 20019290920 is 2909291002.

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, 5322400 + ... + 5326159.

It is an arithmetic number, because the mean of its divisors is an integer number (1437555600).

Almost surely, 2^20019290920 is an apocalyptic number.

20019290920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20019290920 is an abundant number, since it is smaller than the sum of its proper divisors (25982488280).

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

20019290920 is a wasteful number, since it uses less digits than its factorization.

20019290920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10648617 (or 10648613 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 34.

The spelling of 20019290920 in words is "twenty billion, nineteen million, two hundred ninety thousand, nine hundred twenty".