111606506660 has 48 divisors (see below), whose sum is σ = 257019098112. Its totient is φ = 40371686400.

The previous prime is 111606506639. The next prime is 111606506663. The reversal of 111606506660 is 66605606111.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (111606506663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1285997 + ... + 1370036.

It is an arithmetic number, because the mean of its divisors is an integer number (5354564544).

Almost surely, 2^111606506660 is an apocalyptic number.

111606506660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111606506660 is an abundant number, since it is smaller than the sum of its proper divisors (145412591452).

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

111606506660 is a wasteful number, since it uses less digits than its factorization.

111606506660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2656244 (or 2656242 counting only the distinct ones).

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

The spelling of 111606506660 in words is "one hundred eleven billion, six hundred six million, five hundred six thousand, six hundred sixty".