112191879169 has 4 divisors (see below), whose sum is σ = 112340085844. Its totient is φ = 112043672496.

The previous prime is 112191879143. The next prime is 112191879197. The reversal of 112191879169 is 961978191211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 961978191211 = 2677 ⋅359349343.

It can be written as a sum of positive squares in 2 ways, for example, as 90653381569 + 21538497600 = 301087^2 + 146760^2 .

It is a cyclic number.

It is not a de Polignac number, because 112191879169 - 2⁹ = 112191878657 is a prime.

It is a super-2 number, since 2×112191879169² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112191879199) 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, 74102202 + ... + 74103715.

It is an arithmetic number, because the mean of its divisors is an integer number (28085021461).

Almost surely, 2^112191879169 is an apocalyptic number.

It is an amenable number.

112191879169 is a deficient number, since it is larger than the sum of its proper divisors (148206675).

112191879169 is an equidigital number, since it uses as much as digits as its factorization.

112191879169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148206674.

The product of its digits is 489888, while the sum is 55.

The spelling of 112191879169 in words is "one hundred twelve billion, one hundred ninety-one million, eight hundred seventy-nine thousand, one hundred sixty-nine".