111355504240 has 80 divisors (see below), whose sum is σ = 267466381056. Its totient is φ = 43070976000.

The previous prime is 111355504237. The next prime is 111355504261. The reversal of 111355504240 is 42405553111.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (31).

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 15 ways as a sum of consecutive naturals, for example, 3209224 + ... + 3243736.

Almost surely, 2^111355504240 is an apocalyptic number.

111355504240 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 111355504240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133733190528).

111355504240 is an abundant number, since it is smaller than the sum of its proper divisors (156110876816).

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

111355504240 is a wasteful number, since it uses less digits than its factorization.

111355504240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35858 (or 35852 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 111355504240 in words is "one hundred eleven billion, three hundred fifty-five million, five hundred four thousand, two hundred forty".