111520044240 has 160 divisors (see below), whose sum is σ = 377315421696. Its totient is φ = 27022625280.

The previous prime is 111520044227. The next prime is 111520044257. The reversal of 111520044240 is 42440025111.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 111520044240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6504319 + ... + 6521441.

Almost surely, 2^111520044240 is an apocalyptic number.

111520044240 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 111520044240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188657710848).

111520044240 is an abundant number, since it is smaller than the sum of its proper divisors (265795377456).

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

111520044240 is a wasteful number, since it uses less digits than its factorization.

111520044240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19617 (or 19611 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

Adding to 111520044240 its reverse (42440025111), we get a palindrome (153960069351).

The spelling of 111520044240 in words is "one hundred eleven billion, five hundred twenty million, forty-four thousand, two hundred forty".