11515067609 has 2 divisors, whose sum is σ = 11515067610. Its totient is φ = 11515067608.

The previous prime is 11515067579. The next prime is 11515067611. The reversal of 11515067609 is 90676051511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10676675584 + 838392025 = 103328^2 + 28955^2 .

It is a cyclic number.

It is not a de Polignac number, because 11515067609 - 2⁸ = 11515067353 is a prime.

Together with 11515067611, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11515067699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5757533804 + 5757533805.

It is an arithmetic number, because the mean of its divisors is an integer number (5757533805).

Almost surely, 2^11515067609 is an apocalyptic number.

It is an amenable number.

11515067609 is a deficient number, since it is larger than the sum of its proper divisors (1).

11515067609 is an equidigital number, since it uses as much as digits as its factorization.

11515067609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56700, while the sum is 41.

The spelling of 11515067609 in words is "eleven billion, five hundred fifteen million, sixty-seven thousand, six hundred nine".