6556650566556 has 48 divisors (see below), whose sum is σ = 16122933814400. Its totient is φ = 2068093829952.

The previous prime is 6556650566527. The next prime is 6556650566681.

6556650566556 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×6556650566556² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16662046 + ... + 17051013.

Almost surely, 2^{6556650566556} is an apocalyptic number.

It is an amenable number.

6556650566556 is an abundant number, since it is smaller than the sum of its proper divisors (9566283247844).

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

6556650566556 is a wasteful number, since it uses less digits than its factorization.

6556650566556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33713938 (or 33713936 counting only the distinct ones).

The product of its (nonzero) digits is 729000000, while the sum is 66.

The spelling of 6556650566556 in words is "six trillion, five hundred fifty-six billion, six hundred fifty million, five hundred sixty-six thousand, five hundred fifty-six".