111660066560 has 144 divisors (see below), whose sum is σ = 305851896000. Its totient is φ = 38260604928.

The previous prime is 111660066527. The next prime is 111660066613. The reversal of 111660066560 is 65660066111.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22836596 + ... + 22841484.

It is an arithmetic number, because the mean of its divisors is an integer number (2123971500).

Almost surely, 2^111660066560 is an apocalyptic number.

111660066560 is a gapful number since it is divisible by the number (10) 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 111660066560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152925948000).

111660066560 is an abundant number, since it is smaller than the sum of its proper divisors (194191829440).

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

111660066560 is an equidigital number, since it uses as much as digits as its factorization.

111660066560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7466 (or 7452 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 38.

The spelling of 111660066560 in words is "one hundred eleven billion, six hundred sixty million, sixty-six thousand, five hundred sixty".