111900231680 has 96 divisors (see below), whose sum is σ = 268790296320. Its totient is φ = 44710871040.

The previous prime is 111900231623. The next prime is 111900231721. The reversal of 111900231680 is 86132009111.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10142327 + ... + 10153353.

It is an arithmetic number, because the mean of its divisors is an integer number (2799898920).

Almost surely, 2^111900231680 is an apocalyptic number.

111900231680 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 111900231680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134395148160).

111900231680 is an abundant number, since it is smaller than the sum of its proper divisors (156890064640).

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

111900231680 is an equidigital number, since it uses as much as digits as its factorization.

111900231680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12045 (or 12025 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 32.

The spelling of 111900231680 in words is "one hundred eleven billion, nine hundred million, two hundred thirty-one thousand, six hundred eighty".