56666075637 has 8 divisors (see below), whose sum is σ = 78839757504. Its totient is φ = 36134888768.

The previous prime is 56666075633. The next prime is 56666075647. The reversal of 56666075637 is 73657066665.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56666075637 - 2² = 56666075633 is a prime.

It is a super-2 number, since 2×56666075637² (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 (56666075633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 410623668 + ... + 410623805.

It is an arithmetic number, because the mean of its divisors is an integer number (9854969688).

Almost surely, 2^56666075637 is an apocalyptic number.

It is an amenable number.

56666075637 is a deficient number, since it is larger than the sum of its proper divisors (22173681867).

56666075637 is a wasteful number, since it uses less digits than its factorization.

56666075637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821247499.

The product of its (nonzero) digits is 28576800, while the sum is 57.

The spelling of 56666075637 in words is "fifty-six billion, six hundred sixty-six million, seventy-five thousand, six hundred thirty-seven".