57921949863 has 24 divisors (see below), whose sum is σ = 88083964800. Its totient is φ = 36575844624.

The previous prime is 57921949861. The next prime is 57921949867. The reversal of 57921949863 is 36894912975.

57921949863 is a `hidden beast` number, since 5 + 79 + 2 + 19 + 498 + 63 = 666.

It is not a de Polignac number, because 57921949863 - 2¹ = 57921949861 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57921949863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57921949861) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1060756 + ... + 1114022.

It is an arithmetic number, because the mean of its divisors is an integer number (3670165200).

Almost surely, 2^57921949863 is an apocalyptic number.

57921949863 is a deficient number, since it is larger than the sum of its proper divisors (30162014937).

57921949863 is a wasteful number, since it uses less digits than its factorization.

57921949863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59651 (or 59648 counting only the distinct ones).

The product of its digits is 29393280, while the sum is 63.

The spelling of 57921949863 in words is "fifty-seven billion, nine hundred twenty-one million, nine hundred forty-nine thousand, eight hundred sixty-three".