57505431243 has 32 divisors (see below), whose sum is σ = 87200193024. Its totient is φ = 33441484032.

The previous prime is 57505431227. The next prime is 57505431253. The reversal of 57505431243 is 34213450575.

It is not a de Polignac number, because 57505431243 - 2⁴ = 57505431227 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (57505431253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 311746 + ... + 460647.

It is an arithmetic number, because the mean of its divisors is an integer number (2725006032).

Almost surely, 2^57505431243 is an apocalyptic number.

57505431243 is a deficient number, since it is larger than the sum of its proper divisors (29694761781).

57505431243 is a wasteful number, since it uses less digits than its factorization.

57505431243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772515.

The product of its (nonzero) digits is 252000, while the sum is 39.

The spelling of 57505431243 in words is "fifty-seven billion, five hundred five million, four hundred thirty-one thousand, two hundred forty-three".