57745544021 has 48 divisors (see below), whose sum is σ = 70275072000. Its totient is φ = 47190638880.

The previous prime is 57745544011. The next prime is 57745544069. The reversal of 57745544021 is 12044554775.

It is a happy number.

It is not a de Polignac number, because 57745544021 - 2⁶ = 57745543957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57745544011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6711080 + ... + 6719678.

It is an arithmetic number, because the mean of its divisors is an integer number (1464064000).

Almost surely, 2^57745544021 is an apocalyptic number.

It is an amenable number.

57745544021 is a deficient number, since it is larger than the sum of its proper divisors (12529527979).

57745544021 is a wasteful number, since it uses less digits than its factorization.

57745544021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8790 (or 8779 counting only the distinct ones).

The product of its (nonzero) digits is 784000, while the sum is 44.

The spelling of 57745544021 in words is "fifty-seven billion, seven hundred forty-five million, five hundred forty-four thousand, twenty-one".