111158191872 has 1296 divisors, whose sum is σ = 435115437120. Its totient is φ = 26977370112.

The previous prime is 111158191867. The next prime is 111158191889. The reversal of 111158191872 is 278191851111.

It is a happy number.

It is a super-2 number, since 2×111158191872² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1248968404 + ... + 1248968492.

It is an arithmetic number, because the mean of its divisors is an integer number (335737220).

Almost surely, 2^111158191872 is an apocalyptic number.

111158191872 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 111158191872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217557718560).

111158191872 is an abundant number, since it is smaller than the sum of its proper divisors (323957245248).

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

111158191872 is a wasteful number, since it uses less digits than its factorization.

111158191872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 174 counting only the distinct ones).

The product of its digits is 40320, while the sum is 45.

The spelling of 111158191872 in words is "one hundred eleven billion, one hundred fifty-eight million, one hundred ninety-one thousand, eight hundred seventy-two".