56668458686 has 16 divisors (see below), whose sum is σ = 98738486880. Its totient is φ = 23888342880.

The previous prime is 56668458617. The next prime is 56668458703. The reversal of 56668458686 is 68685486665.

It is a super-2 number, since 2×56668458686² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33177401 + ... + 33179108.

It is an arithmetic number, because the mean of its divisors is an integer number (6171155430).

Almost surely, 2^56668458686 is an apocalyptic number.

56668458686 is a deficient number, since it is larger than the sum of its proper divisors (42070028194).

56668458686 is a wasteful number, since it uses less digits than its factorization.

56668458686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66356579.

The product of its digits is 398131200, while the sum is 68.

The spelling of 56668458686 in words is "fifty-six billion, six hundred sixty-eight million, four hundred fifty-eight thousand, six hundred eighty-six".