111720509400 has 96 divisors (see below), whose sum is σ = 357505689600. Its totient is φ = 28831094400.

The previous prime is 111720509359. The next prime is 111720509423. The reversal of 111720509400 is 4905027111.

111720509400 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2984640 + ... + 3021839.

It is an arithmetic number, because the mean of its divisors is an integer number (3724017600).

Almost surely, 2^111720509400 is an apocalyptic number.

111720509400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111720509400 is an abundant number, since it is smaller than the sum of its proper divisors (245785180200).

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

111720509400 is a wasteful number, since it uses less digits than its factorization.

111720509400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6006529 (or 6006520 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 30.

The spelling of 111720509400 in words is "one hundred eleven billion, seven hundred twenty million, five hundred nine thousand, four hundred".