112355666891 has 4 divisors (see below), whose sum is σ = 120998410512. Its totient is φ = 103712923272.

The previous prime is 112355666887. The next prime is 112355666933. The reversal of 112355666891 is 198666553211.

It is a happy number.

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 112355666891 - 2² = 112355666887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112355666191) 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, 4321371791 + ... + 4321371816.

It is an arithmetic number, because the mean of its divisors is an integer number (30249602628).

Almost surely, 2^112355666891 is an apocalyptic number.

112355666891 is a deficient number, since it is larger than the sum of its proper divisors (8642743621).

112355666891 is an equidigital number, since it uses as much as digits as its factorization.

112355666891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8642743620.

The product of its digits is 2332800, while the sum is 53.

The spelling of 112355666891 in words is "one hundred twelve billion, three hundred fifty-five million, six hundred sixty-six thousand, eight hundred ninety-one".