115160665661 has 2 divisors, whose sum is σ = 115160665662. Its totient is φ = 115160665660.

The previous prime is 115160665589. The next prime is 115160665667. The reversal of 115160665661 is 166566061511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68809159225 + 46351506436 = 262315^2 + 215294^2 .

It is an emirp because it is prime and its reverse (166566061511) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115160665661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115160665667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57580332830 + 57580332831.

It is an arithmetic number, because the mean of its divisors is an integer number (57580332831).

Almost surely, 2^115160665661 is an apocalyptic number.

It is an amenable number.

115160665661 is a deficient number, since it is larger than the sum of its proper divisors (1).

115160665661 is an equidigital number, since it uses as much as digits as its factorization.

115160665661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 44.

The spelling of 115160665661 in words is "one hundred fifteen billion, one hundred sixty million, six hundred sixty-five thousand, six hundred sixty-one".