20404795972 has 96 divisors (see below), whose sum is σ = 42078306816. Its totient is φ = 8554291200.

The previous prime is 20404795919. The next prime is 20404795979. The reversal of 20404795972 is 27959740402.

It is not an unprimeable number, because it can be changed into a prime (20404795979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15375973 + ... + 15377299.

It is an arithmetic number, because the mean of its divisors is an integer number (438315696).

Almost surely, 2^20404795972 is an apocalyptic number.

20404795972 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20404795972 is an abundant number, since it is smaller than the sum of its proper divisors (21673510844).

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

20404795972 is a wasteful number, since it uses less digits than its factorization.

20404795972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1757 (or 1755 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 49.

The spelling of 20404795972 in words is "twenty billion, four hundred four million, seven hundred ninety-five thousand, nine hundred seventy-two".