57008947440 has 80 divisors (see below), whose sum is σ = 177624979488. Its totient is φ = 15125203968.

The previous prime is 57008947421. The next prime is 57008947451. The reversal of 57008947440 is 4474980075.

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 57008947440.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 555607 + ... + 650166.

Almost surely, 2^57008947440 is an apocalyptic number.

It is an amenable number.

57008947440 is an abundant number, since it is smaller than the sum of its proper divisors (120616032048).

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

57008947440 is a wasteful number, since it uses less digits than its factorization.

57008947440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205986 (or 1205980 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 48.

The spelling of 57008947440 in words is "fifty-seven billion, eight million, nine hundred forty-seven thousand, four hundred forty".