111779556179 has 8 divisors (see below), whose sum is σ = 112896133680. Its totient is φ = 110663172000.

The previous prime is 111779556151. The next prime is 111779556211. The reversal of 111779556179 is 971655977111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111779556179 - 2¹⁶ = 111779490643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111779556149) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1300757 + ... + 1384025.

It is an arithmetic number, because the mean of its divisors is an integer number (14112016710).

Almost surely, 2^111779556179 is an apocalyptic number.

111779556179 is a deficient number, since it is larger than the sum of its proper divisors (1116577501).

111779556179 is a wasteful number, since it uses less digits than its factorization.

111779556179 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96661.

The product of its digits is 4167450, while the sum is 59.

The spelling of 111779556179 in words is "one hundred eleven billion, seven hundred seventy-nine million, five hundred fifty-six thousand, one hundred seventy-nine".