111111105679 has 4 divisors (see below), whose sum is σ = 126984120784. Its totient is φ = 95238090576.

The previous prime is 111111105653. The next prime is 111111105733. The reversal of 111111105679 is 976501111111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111111105679 - 2³⁵ = 76751367311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111111102679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7936507542 + ... + 7936507555.

It is an arithmetic number, because the mean of its divisors is an integer number (31746030196).

Almost surely, 2^111111105679 is an apocalyptic number.

111111105679 is a deficient number, since it is larger than the sum of its proper divisors (15873015105).

111111105679 is an equidigital number, since it uses as much as digits as its factorization.

111111105679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15873015104.

The product of its (nonzero) digits is 1890, while the sum is 34.

The spelling of 111111105679 in words is "one hundred eleven billion, one hundred eleven million, one hundred five thousand, six hundred seventy-nine".