56133579666 has 16 divisors (see below), whose sum is σ = 113020632000. Its totient is φ = 18585614448.

The previous prime is 56133579653. The next prime is 56133579703. The reversal of 56133579666 is 66697533165.

It is a super-2 number, since 2×56133579666² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 31393726 + ... + 31395513.

It is an arithmetic number, because the mean of its divisors is an integer number (7063789500).

Almost surely, 2^56133579666 is an apocalyptic number.

56133579666 is an abundant number, since it is smaller than the sum of its proper divisors (56887052334).

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

56133579666 is a wasteful number, since it uses less digits than its factorization.

56133579666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62789393.

The product of its digits is 18370800, while the sum is 57.

The spelling of 56133579666 in words is "fifty-six billion, one hundred thirty-three million, five hundred seventy-nine thousand, six hundred sixty-six".