5666051651556 has 24 divisors (see below), whose sum is σ = 13220825931040. Its totient is φ = 1888678348992.

The previous prime is 5666051651549. The next prime is 5666051651581. The reversal of 5666051651556 is 6551561506665.

It is a super-2 number, since 2×5666051651556² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5666051651496 and 5666051651505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6948855 + ... + 7721313.

Almost surely, 2^{5666051651556} is an apocalyptic number.

It is an amenable number.

5666051651556 is an abundant number, since it is smaller than the sum of its proper divisors (7554774279484).

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

5666051651556 is a wasteful number, since it uses less digits than its factorization.

5666051651556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383723 (or 1383721 counting only the distinct ones).

The product of its (nonzero) digits is 24300000, while the sum is 57.

The spelling of 5666051651556 in words is "five trillion, six hundred sixty-six billion, fifty-one million, six hundred fifty-one thousand, five hundred fifty-six".