57468645981 has 12 divisors (see below), whose sum is σ = 83110652352. Its totient is φ = 38266098696.

The previous prime is 57468645893. The next prime is 57468646019. The reversal of 57468645981 is 18954686475.

57468645981 is a `hidden beast` number, since 57 + 468 + 6 + 45 + 9 + 81 = 666.

It is not a de Polignac number, because 57468645981 - 2¹⁰ = 57468644957 is a prime.

It is a super-2 number, since 2×57468645981² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57468645781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3853141 + ... + 3868026.

It is an arithmetic number, because the mean of its divisors is an integer number (6925887696).

Almost surely, 2^57468645981 is an apocalyptic number.

It is an amenable number.

57468645981 is a deficient number, since it is larger than the sum of its proper divisors (25642006371).

57468645981 is a wasteful number, since it uses less digits than its factorization.

57468645981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7722000 (or 7721997 counting only the distinct ones).

The product of its digits is 58060800, while the sum is 63.

The spelling of 57468645981 in words is "fifty-seven billion, four hundred sixty-eight million, six hundred forty-five thousand, nine hundred eighty-one".