112591123512 has 256 divisors, whose sum is σ = 332711608320. Its totient is φ = 31091558400.

The previous prime is 112591123511. The next prime is 112591123523. The reversal of 112591123512 is 215321195211.

It is a super-2 number, since 2×112591123512² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112591123511) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 138829587 + ... + 138830397.

It is an arithmetic number, because the mean of its divisors is an integer number (1299654720).

Almost surely, 2^112591123512 is an apocalyptic number.

112591123512 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 112591123512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166355804160).

112591123512 is an abundant number, since it is smaller than the sum of its proper divisors (220120484808).

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

112591123512 is a wasteful number, since it uses less digits than its factorization.

112591123512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114 (or 1110 counting only the distinct ones).

The product of its digits is 5400, while the sum is 33.

It can be divided in two parts, 11259 and 1123512, that added together give a triangular number (1134771 = T₁₅₀₆).

The spelling of 112591123512 in words is "one hundred twelve billion, five hundred ninety-one million, one hundred twenty-three thousand, five hundred twelve".