111999582240 has 1152 divisors, whose sum is σ = 484753973760. Its totient is φ = 21444820992.

The previous prime is 111999582239. The next prime is 111999582251. The reversal of 111999582240 is 42285999111.

It is a Harshad number since it is a multiple of its sum of digits (51).

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 191 ways as a sum of consecutive naturals, for example, 150739309 + ... + 150740051.

It is an arithmetic number, because the mean of its divisors is an integer number (420793380).

Almost surely, 2^111999582240 is an apocalyptic number.

111999582240 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 111999582240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242376986880).

111999582240 is an abundant number, since it is smaller than the sum of its proper divisors (372754391520).

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

111999582240 is a wasteful number, since it uses less digits than its factorization.

111999582240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834 (or 819 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 51.

The spelling of 111999582240 in words is "one hundred eleven billion, nine hundred ninety-nine million, five hundred eighty-two thousand, two hundred forty".