111979244688 has 80 divisors (see below), whose sum is σ = 294779513856. Its totient is φ = 36622126080.

The previous prime is 111979244659. The next prime is 111979244717. The reversal of 111979244688 is 886442979111.

It is a Cunningham number, because it is equal to 334633²-1.

It is an interprime number because it is at equal distance from previous prime (111979244659) and next prime (111979244717).

It is a super-3 number, since 3×111979244688³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 585606 + ... + 752922.

Almost surely, 2^111979244688 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 111979244688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147389756928).

111979244688 is an abundant number, since it is smaller than the sum of its proper divisors (182800269168).

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

111979244688 is a wasteful number, since it uses less digits than its factorization.

111979244688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167592 (or 167586 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 60.

The spelling of 111979244688 in words is "one hundred eleven billion, nine hundred seventy-nine million, two hundred forty-four thousand, six hundred eighty-eight".