111993499800 has 1344 divisors, whose sum is σ = 502747822080. Its totient is φ = 22540446720.

The previous prime is 111993499789. The next prime is 111993499897. The reversal of 111993499800 is 8994399111.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 335 ways as a sum of consecutive naturals, for example, 305159217 + ... + 305159583.

It is an arithmetic number, because the mean of its divisors is an integer number (374068320).

Almost surely, 2^111993499800 is an apocalyptic number.

111993499800 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 111993499800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251373911040).

111993499800 is an abundant number, since it is smaller than the sum of its proper divisors (390754322280).

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

111993499800 is a wasteful number, since it uses less digits than its factorization.

111993499800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444 (or 420 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 54.

The spelling of 111993499800 in words is "one hundred eleven billion, nine hundred ninety-three million, four hundred ninety-nine thousand, eight hundred".