57131724666 has 16 divisors (see below), whose sum is σ = 114487941600. Its totient is φ = 19006492848.

The previous prime is 57131724649. The next prime is 57131724677. The reversal of 57131724666 is 66642713175.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9350536 + ... + 9356643.

It is an arithmetic number, because the mean of its divisors is an integer number (7155496350).

Almost surely, 2^57131724666 is an apocalyptic number.

57131724666 is an abundant number, since it is smaller than the sum of its proper divisors (57356216934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57131724666 is a wasteful number, since it uses less digits than its factorization.

57131724666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18707693.

The product of its digits is 1270080, while the sum is 48.

The spelling of 57131724666 in words is "fifty-seven billion, one hundred thirty-one million, seven hundred twenty-four thousand, six hundred sixty-six".