56866779206668 has 12 divisors (see below), whose sum is σ = 99516956968912. Its totient is φ = 28433362929840.

The previous prime is 56866779206641. The next prime is 56866779206753. The reversal of 56866779206668 is 86660297766865.

It is a junction number, because it is equal to n+sod(n) for n = 56866779206591 and 56866779206600.

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 3 ways as a sum of consecutive naturals, for example, 1410903 + ... + 10757518.

Almost surely, 2^{56866779206668} is an apocalyptic number.

It is an amenable number.

56866779206668 is a deficient number, since it is larger than the sum of its proper divisors (42650177762244).

56866779206668 is a wasteful number, since it uses less digits than its factorization.

56866779206668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13336752 (or 13336750 counting only the distinct ones).

The product of its (nonzero) digits is 13168189440, while the sum is 82.

The spelling of 56866779206668 in words is "fifty-six trillion, eight hundred sixty-six billion, seven hundred seventy-nine million, two hundred six thousand, six hundred sixty-eight".