6556646466556 has 24 divisors (see below), whose sum is σ = 12149845404480. Its totient is φ = 3085286356992.

The previous prime is 6556646466499. The next prime is 6556646466571.

6556646466556 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×6556646466556² (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 7 ways as a sum of consecutive naturals, for example, 1946005 + ... + 4110988.

It is an arithmetic number, because the mean of its divisors is an integer number (506243558520).

Almost surely, 2^{6556646466556} is an apocalyptic number.

It is an amenable number.

6556646466556 is a deficient number, since it is larger than the sum of its proper divisors (5593198937924).

6556646466556 is a wasteful number, since it uses less digits than its factorization.

6556646466556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6072933 (or 6072931 counting only the distinct ones).

The product of its digits is 2799360000, while the sum is 70.

The spelling of 6556646466556 in words is "six trillion, five hundred fifty-six billion, six hundred forty-six million, four hundred sixty-six thousand, five hundred fifty-six".