57722712665 has 4 divisors (see below), whose sum is σ = 69267255204. Its totient is φ = 46178170128.

The previous prime is 57722712661. The next prime is 57722712667. The reversal of 57722712665 is 56621722775.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33494856256 + 24227856409 = 183016^2 + 155653^2 .

It is a cyclic number.

It is not a de Polignac number, because 57722712665 - 2² = 57722712661 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57722712661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5772271262 + ... + 5772271271.

It is an arithmetic number, because the mean of its divisors is an integer number (17316813801).

Almost surely, 2^57722712665 is an apocalyptic number.

It is an amenable number.

57722712665 is a deficient number, since it is larger than the sum of its proper divisors (11544542539).

57722712665 is a wasteful number, since it uses less digits than its factorization.

57722712665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11544542538.

The product of its digits is 2469600, while the sum is 50.

The spelling of 57722712665 in words is "fifty-seven billion, seven hundred twenty-two million, seven hundred twelve thousand, six hundred sixty-five".