57855513123 has 24 divisors (see below), whose sum is σ = 83834449920. Its totient is φ = 38447979120.

The previous prime is 57855513113. The next prime is 57855513127. The reversal of 57855513123 is 32131555875.

57855513123 is a `hidden beast` number, since 5 + 7 + 8 + 5 + 5 + 513 + 123 = 666.

It is not a de Polignac number, because 57855513123 - 2⁵ = 57855513091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57855513127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8169298 + ... + 8176376.

It is an arithmetic number, because the mean of its divisors is an integer number (3493102080).

Almost surely, 2^57855513123 is an apocalyptic number.

57855513123 is a deficient number, since it is larger than the sum of its proper divisors (25978936797).

57855513123 is a wasteful number, since it uses less digits than its factorization.

57855513123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9839 (or 9836 counting only the distinct ones).

The product of its digits is 630000, while the sum is 45.

The spelling of 57855513123 in words is "fifty-seven billion, eight hundred fifty-five million, five hundred thirteen thousand, one hundred twenty-three".