111542238432 has 240 divisors, whose sum is σ = 347091045840. Its totient is φ = 35042015232.

The previous prime is 111542238403. The next prime is 111542238449. The reversal of 111542238432 is 234832245111.

111542238432 is a `hidden beast` number, since 1 + 1 + 1 + 542 + 2 + 3 + 84 + 32 = 666.

It is a super-2 number, since 2×111542238432² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 9696108 + ... + 9707604.

It is an arithmetic number, because the mean of its divisors is an integer number (1446212691).

Almost surely, 2^111542238432 is an apocalyptic number.

111542238432 is a gapful number since it is divisible by the number (12) 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 111542238432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173545522920).

111542238432 is an abundant number, since it is smaller than the sum of its proper divisors (235548807408).

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

111542238432 is a wasteful number, since it uses less digits than its factorization.

111542238432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11735 (or 11718 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The spelling of 111542238432 in words is "one hundred eleven billion, five hundred forty-two million, two hundred thirty-eight thousand, four hundred thirty-two".