111866745168 has 120 divisors (see below), whose sum is σ = 325446357600. Its totient is φ = 37199378304.

The previous prime is 111866745163. The next prime is 111866745247. The reversal of 111866745168 is 861547668111.

111866745168 is a `hidden beast` number, since 1 + 1 + 186 + 6 + 7 + 451 + 6 + 8 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111866745161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1594738 + ... + 1663406.

It is an arithmetic number, because the mean of its divisors is an integer number (2712052980).

Almost surely, 2^111866745168 is an apocalyptic number.

111866745168 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111866745168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162723178800).

111866745168 is an abundant number, since it is smaller than the sum of its proper divisors (213579612432).

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

111866745168 is an equidigital number, since it uses as much as digits as its factorization.

111866745168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69111 (or 69093 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 54.

The spelling of 111866745168 in words is "one hundred eleven billion, eight hundred sixty-six million, seven hundred forty-five thousand, one hundred sixty-eight".