16666656056 has 16 divisors (see below), whose sum is σ = 32894716200. Its totient is φ = 7894731744.

The previous prime is 16666656049. The next prime is 16666656067. The reversal of 16666656056 is 65065666661.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 16666655989 and 16666656007.

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 3 ways as a sum of consecutive naturals, for example, 54824375 + ... + 54824678.

Almost surely, 2^16666656056 is an apocalyptic number.

It is an amenable number.

16666656056 is a deficient number, since it is larger than the sum of its proper divisors (16228060144).

16666656056 is a wasteful number, since it uses less digits than its factorization.

16666656056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109649078 (or 109649074 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 53.

The spelling of 16666656056 in words is "sixteen billion, six hundred sixty-six million, six hundred fifty-six thousand, fifty-six".