57309304661 has 16 divisors (see below), whose sum is σ = 67406976384. Its totient is φ = 47702499264.

The previous prime is 57309304621. The next prime is 57309304681. The reversal of 57309304661 is 16640390375.

It is a happy number.

It is not a de Polignac number, because 57309304661 - 2¹⁰ = 57309303637 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57309304601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 498206 + ... + 602351.

It is an arithmetic number, because the mean of its divisors is an integer number (4212936024).

Almost surely, 2^57309304661 is an apocalyptic number.

It is an amenable number.

57309304661 is a deficient number, since it is larger than the sum of its proper divisors (10097671723).

57309304661 is a wasteful number, since it uses less digits than its factorization.

57309304661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100780.

The product of its (nonzero) digits is 408240, while the sum is 44.

The spelling of 57309304661 in words is "fifty-seven billion, three hundred nine million, three hundred four thousand, six hundred sixty-one".