115305210323509 has 2 divisors, whose sum is σ = 115305210323510. Its totient is φ = 115305210323508.

The previous prime is 115305210323417. The next prime is 115305210323599. The reversal of 115305210323509 is 905323012503511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115291544012100 + 13666311409 = 10737390^2 + 116903^2 .

It is a cyclic number.

It is not a de Polignac number, because 115305210323509 - 2²⁹ = 115304673452597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115305210323599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57652605161754 + 57652605161755.

It is an arithmetic number, because the mean of its divisors is an integer number (57652605161755).

Almost surely, 2^{115305210323509} is an apocalyptic number.

It is an amenable number.

115305210323509 is a deficient number, since it is larger than the sum of its proper divisors (1).

115305210323509 is an equidigital number, since it uses as much as digits as its factorization.

115305210323509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 121500, while the sum is 40.

The spelling of 115305210323509 in words is "one hundred fifteen trillion, three hundred five billion, two hundred ten million, three hundred twenty-three thousand, five hundred nine".