112806138761 has 4 divisors (see below), whose sum is σ = 112806815124. Its totient is φ = 112805462400.

The previous prime is 112806138749. The next prime is 112806138779. The reversal of 112806138761 is 167831608211.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 39774319225 + 73031819536 = 199435^2 + 270244^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112806138761 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (112806138161) 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, 109841 + ... + 487521.

It is an arithmetic number, because the mean of its divisors is an integer number (28201703781).

Almost surely, 2^112806138761 is an apocalyptic number.

It is an amenable number.

112806138761 is a deficient number, since it is larger than the sum of its proper divisors (676363).

112806138761 is an equidigital number, since it uses as much as digits as its factorization.

112806138761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676362.

The product of its (nonzero) digits is 96768, while the sum is 44.

The spelling of 112806138761 in words is "one hundred twelve billion, eight hundred six million, one hundred thirty-eight thousand, seven hundred sixty-one".