57996421920 has 144 divisors (see below), whose sum is σ = 204297230592. Its totient is φ = 14966807040.

The previous prime is 57996421913. The next prime is 57996421937. The reversal of 57996421920 is 2912469975.

57996421920 is a `hidden beast` number, since 579 + 9 + 6 + 42 + 1 + 9 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 604962 + ... + 694241.

It is an arithmetic number, because the mean of its divisors is an integer number (1418730768).

Almost surely, 2^57996421920 is an apocalyptic number.

It is an amenable number.

57996421920 is an abundant number, since it is smaller than the sum of its proper divisors (146300808672).

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

57996421920 is a wasteful number, since it uses less digits than its factorization.

57996421920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299255 (or 1299244 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The spelling of 57996421920 in words is "fifty-seven billion, nine hundred ninety-six million, four hundred twenty-one thousand, nine hundred twenty".