115128997699 has 2 divisors, whose sum is σ = 115128997700. Its totient is φ = 115128997698.

The previous prime is 115128997583. The next prime is 115128997703. The reversal of 115128997699 is 996799821511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 115128997699 - 2⁹ = 115128997187 is a prime.

It is a super-2 number, since 2×115128997699² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (115128997999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57564498849 + 57564498850.

It is an arithmetic number, because the mean of its divisors is an integer number (57564498850).

Almost surely, 2^115128997699 is an apocalyptic number.

115128997699 is a deficient number, since it is larger than the sum of its proper divisors (1).

115128997699 is an equidigital number, since it uses as much as digits as its factorization.

115128997699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22044960, while the sum is 67.

The spelling of 115128997699 in words is "one hundred fifteen billion, one hundred twenty-eight million, nine hundred ninety-seven thousand, six hundred ninety-nine".