57424823721 has 28 divisors (see below), whose sum is σ = 86123223552. Its totient is φ = 38271934296.

The previous prime is 57424823683. The next prime is 57424823749. The reversal of 57424823721 is 12732842475.

57424823721 is a `hidden beast` number, since 574 + 2 + 4 + 8 + 2 + 3 + 72 + 1 = 666.

It is not a de Polignac number, because 57424823721 - 2¹¹ = 57424821673 is a prime.

It is a super-2 number, since 2×57424823721² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57424823921) by changing a digit.

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 27 ways as a sum of consecutive naturals, for example, 2999040 + ... + 3018126.

Almost surely, 2^57424823721 is an apocalyptic number.

It is an amenable number.

57424823721 is a deficient number, since it is larger than the sum of its proper divisors (28698399831).

57424823721 is an equidigital number, since it uses as much as digits as its factorization.

57424823721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23232 (or 23217 counting only the distinct ones).

The product of its digits is 752640, while the sum is 45.

The spelling of 57424823721 in words is "fifty-seven billion, four hundred twenty-four million, eight hundred twenty-three thousand, seven hundred twenty-one".