112981638449 has 4 divisors (see below), whose sum is σ = 113006992164. Its totient is φ = 112956284736.

The previous prime is 112981638401. The next prime is 112981638467. The reversal of 112981638449 is 944836189211.

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

It can be written as a sum of positive squares in 2 ways, for example, as 59623872400 + 53357766049 = 244180^2 + 230993^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112981638449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112981638394 and 112981638403.

It is not an unprimeable number, because it can be changed into a prime (112981638499) 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, 12670172 + ... + 12679085.

It is an arithmetic number, because the mean of its divisors is an integer number (28251748041).

Almost surely, 2^112981638449 is an apocalyptic number.

It is an amenable number.

112981638449 is a deficient number, since it is larger than the sum of its proper divisors (25353715).

112981638449 is an equidigital number, since it uses as much as digits as its factorization.

112981638449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25353714.

The product of its digits is 2985984, while the sum is 56.

The spelling of 112981638449 in words is "one hundred twelve billion, nine hundred eighty-one million, six hundred thirty-eight thousand, four hundred forty-nine".