115116691 has 2 divisors, whose sum is σ = 115116692. Its totient is φ = 115116690.

The previous prime is 115116647. The next prime is 115116721. The reversal of 115116691 is 196611511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 115116691 - 2⁷ = 115116563 is a prime.

It is not a weakly prime, because it can be changed into another prime (115116091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57558345 + 57558346.

It is an arithmetic number, because the mean of its divisors is an integer number (57558346).

Almost surely, 2^115116691 is an apocalyptic number.

115116691 is a deficient number, since it is larger than the sum of its proper divisors (1).

115116691 is an equidigital number, since it uses as much as digits as its factorization.

115116691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 31.

The square root of 115116691 is about 10729.2446612052. The cubic root of 115116691 is about 486.4588391924.

The spelling of 115116691 in words is "one hundred fifteen million, one hundred sixteen thousand, six hundred ninety-one".