57033610721 has 4 divisors (see below), whose sum is σ = 57035166000. Its totient is φ = 57032055444.

The previous prime is 57033610703. The next prime is 57033610759. The reversal of 57033610721 is 12701633075.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57033610721 - 2³⁰ = 55959868897 is a prime.

It is a super-2 number, since 2×57033610721² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57033610321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 721271 + ... + 796428.

It is an arithmetic number, because the mean of its divisors is an integer number (14258791500).

Almost surely, 2^57033610721 is an apocalyptic number.

It is an amenable number.

57033610721 is a deficient number, since it is larger than the sum of its proper divisors (1555279).

57033610721 is a wasteful number, since it uses less digits than its factorization.

57033610721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555278.

The product of its (nonzero) digits is 26460, while the sum is 35.

The spelling of 57033610721 in words is "fifty-seven billion, thirty-three million, six hundred ten thousand, seven hundred twenty-one".