20078972592 has 80 divisors (see below), whose sum is σ = 59320727040. Its totient is φ = 5732983296.

The previous prime is 20078972581. The next prime is 20078972611. The reversal of 20078972592 is 29527987002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 499084 + ... + 537812.

It is an arithmetic number, because the mean of its divisors is an integer number (741509088).

Almost surely, 2^20078972592 is an apocalyptic number.

It is an amenable number.

20078972592 is an abundant number, since it is smaller than the sum of its proper divisors (39241754448).

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

20078972592 is a wasteful number, since it uses less digits than its factorization.

20078972592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40290 (or 40284 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 51.

The spelling of 20078972592 in words is "twenty billion, seventy-eight million, nine hundred seventy-two thousand, five hundred ninety-two".