57171332661 has 32 divisors (see below), whose sum is σ = 79167473280. Its totient is φ = 36669394944.

The previous prime is 57171332653. The next prime is 57171332681. The reversal of 57171332661 is 16623317175.

It is not a de Polignac number, because 57171332661 - 2³ = 57171332653 is a prime.

It is a super-2 number, since 2×57171332661² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57171332681) 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, 5551405 + ... + 5561693.

It is an arithmetic number, because the mean of its divisors is an integer number (2473983540).

Almost surely, 2^57171332661 is an apocalyptic number.

It is an amenable number.

57171332661 is a deficient number, since it is larger than the sum of its proper divisors (21996140619).

57171332661 is a wasteful number, since it uses less digits than its factorization.

57171332661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10885.

The product of its digits is 158760, while the sum is 42.

The spelling of 57171332661 in words is "fifty-seven billion, one hundred seventy-one million, three hundred thirty-two thousand, six hundred sixty-one".