111156491712 has 224 divisors, whose sum is σ = 351101509632. Its totient is φ = 30345993216.

The previous prime is 111156491707. The next prime is 111156491723. The reversal of 111156491712 is 217194651111.

It is a tau number, because it is divible by the number of its divisors (224).

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, 53260333 + ... + 53262419.

Almost surely, 2^111156491712 is an apocalyptic number.

111156491712 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 111156491712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175550754816).

111156491712 is an abundant number, since it is smaller than the sum of its proper divisors (239945017920).

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

111156491712 is a wasteful number, since it uses less digits than its factorization.

111156491712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3855 (or 3845 counting only the distinct ones).

The product of its digits is 15120, while the sum is 39.

The spelling of 111156491712 in words is "one hundred eleven billion, one hundred fifty-six million, four hundred ninety-one thousand, seven hundred twelve".