111864163686 has 16 divisors (see below), whose sum is σ = 244067266368. Its totient is φ = 33898231400.

The previous prime is 111864163681. The next prime is 111864163751. The reversal of 111864163686 is 686361468111.

It is a happy number.

It is a super-2 number, since 2×111864163686² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111864163681) 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, 847455720 + ... + 847455851.

It is an arithmetic number, because the mean of its divisors is an integer number (15254204148).

Almost surely, 2^111864163686 is an apocalyptic number.

111864163686 is an abundant number, since it is smaller than the sum of its proper divisors (132203102682).

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

111864163686 is a wasteful number, since it uses less digits than its factorization.

111864163686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1694911587.

The product of its digits is 995328, while the sum is 51.

The spelling of 111864163686 in words is "one hundred eleven billion, eight hundred sixty-four million, one hundred sixty-three thousand, six hundred eighty-six".