115223403509 has 2 divisors, whose sum is σ = 115223403510. Its totient is φ = 115223403508.

The previous prime is 115223403467. The next prime is 115223403637. The reversal of 115223403509 is 905304322511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65548800625 + 49674602884 = 256025^2 + 222878^2 .

It is a cyclic number.

It is not a de Polignac number, because 115223403509 - 2³⁶ = 46503926773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115223403109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57611701754 + 57611701755.

It is an arithmetic number, because the mean of its divisors is an integer number (57611701755).

Almost surely, 2^115223403509 is an apocalyptic number.

It is an amenable number.

115223403509 is a deficient number, since it is larger than the sum of its proper divisors (1).

115223403509 is an equidigital number, since it uses as much as digits as its factorization.

115223403509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 115223403509 in words is "one hundred fifteen billion, two hundred twenty-three million, four hundred three thousand, five hundred nine".