16666656107156 has 24 divisors (see below), whose sum is σ = 31921803905376. Its totient is φ = 7551076050720.

The previous prime is 16666656107141. The next prime is 16666656107159. The reversal of 16666656107156 is 65170165666661.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16666656107159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 616904471 + ... + 616931486.

It is an arithmetic number, because the mean of its divisors is an integer number (1330075162724).

Almost surely, 2^{16666656107156} is an apocalyptic number.

It is an amenable number.

16666656107156 is a deficient number, since it is larger than the sum of its proper divisors (15255147798220).

16666656107156 is a wasteful number, since it uses less digits than its factorization.

16666656107156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233836279 (or 1233836277 counting only the distinct ones).

The product of its (nonzero) digits is 48988800, while the sum is 62.

The spelling of 16666656107156 in words is "sixteen trillion, six hundred sixty-six billion, six hundred fifty-six million, one hundred seven thousand, one hundred fifty-six".