57813492720 has 80 divisors (see below), whose sum is σ = 179763530112. Its totient is φ = 15370333440.

The previous prime is 57813492641. The next prime is 57813492731. The reversal of 57813492720 is 2729431875.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 57813492720.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284442 + ... + 443321.

Almost surely, 2^57813492720 is an apocalyptic number.

It is an amenable number.

57813492720 is an abundant number, since it is smaller than the sum of its proper divisors (121950037392).

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

57813492720 is a wasteful number, since it uses less digits than its factorization.

57813492720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728110 (or 728104 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 57813492720 in words is "fifty-seven billion, eight hundred thirteen million, four hundred ninety-two thousand, seven hundred twenty".