111859668236608 has 112 divisors (see below), whose sum is σ = 226034061926400. Its totient is φ = 54914735715840.

The previous prime is 111859668236557. The next prime is 111859668236621. The reversal of 111859668236608 is 806632866958111.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 878431503 + ... + 878558833.

It is an arithmetic number, because the mean of its divisors is an integer number (2018161267200).

Almost surely, 2^{111859668236608} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111859668236608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113017030963200).

111859668236608 is an abundant number, since it is smaller than the sum of its proper divisors (114174393689792).

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

111859668236608 is a wasteful number, since it uses less digits than its factorization.

111859668236608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128388 (or 128378 counting only the distinct ones).

The product of its (nonzero) digits is 179159040, while the sum is 70.

The spelling of 111859668236608 in words is "one hundred eleven trillion, eight hundred fifty-nine billion, six hundred sixty-eight million, two hundred thirty-six thousand, six hundred eight".