57785872361 has 32 divisors (see below), whose sum is σ = 68420491776. Its totient is φ = 47775168000.

The previous prime is 57785872351. The next prime is 57785872379. The reversal of 57785872361 is 16327858775.

It is a de Polignac number, because none of the positive numbers 2^k-57785872361 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 57785872361.

It is not an unprimeable number, because it can be changed into a prime (57785872301) 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, 24268391 + ... + 24270771.

It is an arithmetic number, because the mean of its divisors is an integer number (2138140368).

Almost surely, 2^57785872361 is an apocalyptic number.

It is an amenable number.

57785872361 is a deficient number, since it is larger than the sum of its proper divisors (10634619415).

57785872361 is a wasteful number, since it uses less digits than its factorization.

57785872361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3353.

The product of its digits is 19756800, while the sum is 59.

The spelling of 57785872361 in words is "fifty-seven billion, seven hundred eighty-five million, eight hundred seventy-two thousand, three hundred sixty-one".