111100660680 has 64 divisors (see below), whose sum is σ = 344053670400. Its totient is φ = 28671137280.

The previous prime is 111100660669. The next prime is 111100660681. The reversal of 111100660680 is 86066001111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (111100660681) 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, 14929165 + ... + 14936604.

It is an arithmetic number, because the mean of its divisors is an integer number (5375838600).

Almost surely, 2^111100660680 is an apocalyptic number.

111100660680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111100660680 is an abundant number, since it is smaller than the sum of its proper divisors (232953009720).

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

111100660680 is a wasteful number, since it uses less digits than its factorization.

111100660680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29865814 (or 29865810 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 30.

Adding to 111100660680 its reverse (86066001111), we get a palindrome (197166661791).

The spelling of 111100660680 in words is "one hundred eleven billion, one hundred million, six hundred sixty thousand, six hundred eighty".