113515220375509 has 2 divisors, whose sum is σ = 113515220375510. Its totient is φ = 113515220375508.

The previous prime is 113515220375273. The next prime is 113515220375567. The reversal of 113515220375509 is 905573022515311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59571336753009 + 53943883622500 = 7718247^2 + 7344650^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113515220375509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113515220375569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56757610187754 + 56757610187755.

It is an arithmetic number, because the mean of its divisors is an integer number (56757610187755).

Almost surely, 2^{113515220375509} is an apocalyptic number.

It is an amenable number.

113515220375509 is a deficient number, since it is larger than the sum of its proper divisors (1).

113515220375509 is an equidigital number, since it uses as much as digits as its factorization.

113515220375509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1417500, while the sum is 49.

The spelling of 113515220375509 in words is "one hundred thirteen trillion, five hundred fifteen billion, two hundred twenty million, three hundred seventy-five thousand, five hundred nine".