16666560111069 has 12 divisors (see below), whose sum is σ = 26262458356992. Its totient is φ = 10100945521800.

The previous prime is 16666560111029. The next prime is 16666560111191. The reversal of 16666560111069 is 96011106566661.

It is a happy number.

It is not a de Polignac number, because 16666560111069 - 2²⁸ = 16666291675613 is a prime.

It is a super-2 number, since 2×16666560111069² (a number of 27 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) 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 (16666560111029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84174545917 + ... + 84174546114.

It is an arithmetic number, because the mean of its divisors is an integer number (2188538196416).

Almost surely, 2^{16666560111069} is an apocalyptic number.

It is an amenable number.

16666560111069 is a deficient number, since it is larger than the sum of its proper divisors (9595898245923).

16666560111069 is a wasteful number, since it uses less digits than its factorization.

16666560111069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168349092048 (or 168349092045 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 54.

The spelling of 16666560111069 in words is "sixteen trillion, six hundred sixty-six billion, five hundred sixty million, one hundred eleven thousand, sixty-nine".