111665665110 has 16 divisors (see below), whose sum is σ = 267997596336. Its totient is φ = 29777510688.

The previous prime is 111665665063. The next prime is 111665665117. The reversal of 111665665110 is 11566566111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111665665117) 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 7 ways as a sum of consecutive naturals, for example, 1861094389 + ... + 1861094448.

It is an arithmetic number, because the mean of its divisors is an integer number (16749849771).

Almost surely, 2^111665665110 is an apocalyptic number.

111665665110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111665665110 is an abundant number, since it is smaller than the sum of its proper divisors (156331931226).

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

111665665110 is a wasteful number, since it uses less digits than its factorization.

111665665110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3722188847.

The product of its (nonzero) digits is 32400, while the sum is 39.

The spelling of 111665665110 in words is "one hundred eleven billion, six hundred sixty-five million, six hundred sixty-five thousand, one hundred ten".