57831577721 has 8 divisors (see below), whose sum is σ = 61239584160. Its totient is φ = 54424254528.

The previous prime is 57831577717. The next prime is 57831577733. The reversal of 57831577721 is 12777513875.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57831577721 - 2² = 57831577717 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57831577781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8870 + ... + 340208.

It is an arithmetic number, because the mean of its divisors is an integer number (7654948020).

Almost surely, 2^57831577721 is an apocalyptic number.

It is an amenable number.

57831577721 is a deficient number, since it is larger than the sum of its proper divisors (3408006439).

57831577721 is a wasteful number, since it uses less digits than its factorization.

57831577721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341623.

The product of its digits is 2881200, while the sum is 53.

The spelling of 57831577721 in words is "fifty-seven billion, eight hundred thirty-one million, five hundred seventy-seven thousand, seven hundred twenty-one".