112345566689 has 2 divisors, whose sum is σ = 112345566690. Its totient is φ = 112345566688.

The previous prime is 112345566677. The next prime is 112345566703. The reversal of 112345566689 is 986665543211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111422440000 + 923126689 = 333800^2 + 30383^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112345566689 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (112345566629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56172783344 + 56172783345.

It is an arithmetic number, because the mean of its divisors is an integer number (56172783345).

Almost surely, 2^112345566689 is an apocalyptic number.

It is an amenable number.

112345566689 is a deficient number, since it is larger than the sum of its proper divisors (1).

112345566689 is an equidigital number, since it uses as much as digits as its factorization.

112345566689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9331200, while the sum is 56.

The spelling of 112345566689 in words is "one hundred twelve billion, three hundred forty-five million, five hundred sixty-six thousand, six hundred eighty-nine".