57156264773 has 4 divisors (see below), whose sum is σ = 57157192428. Its totient is φ = 57155337120.

The previous prime is 57156264743. The next prime is 57156264779. The reversal of 57156264773 is 37746265175.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8382867364 + 48773397409 = 91558^2 + 220847^2 .

It is a cyclic number.

It is not a de Polignac number, because 57156264773 - 2²⁴ = 57139487557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57156264779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 364286 + ... + 497007.

It is an arithmetic number, because the mean of its divisors is an integer number (14289298107).

Almost surely, 2^57156264773 is an apocalyptic number.

It is an amenable number.

57156264773 is a deficient number, since it is larger than the sum of its proper divisors (927655).

57156264773 is an equidigital number, since it uses as much as digits as its factorization.

57156264773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927654.

The product of its digits is 7408800, while the sum is 53.

The spelling of 57156264773 in words is "fifty-seven billion, one hundred fifty-six million, two hundred sixty-four thousand, seven hundred seventy-three".