11915318713 has 2 divisors, whose sum is σ = 11915318714. Its totient is φ = 11915318712.

The previous prime is 11915318677. The next prime is 11915318729. The reversal of 11915318713 is 31781351911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8395507129 + 3519811584 = 91627^2 + 59328^2 .

It is an emirp because it is prime and its reverse (31781351911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11915318713 - 2¹³ = 11915310521 is a prime.

It is not a weakly prime, because it can be changed into another prime (11915388713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5957659356 + 5957659357.

It is an arithmetic number, because the mean of its divisors is an integer number (5957659357).

Almost surely, 2^11915318713 is an apocalyptic number.

It is an amenable number.

11915318713 is a deficient number, since it is larger than the sum of its proper divisors (1).

11915318713 is an equidigital number, since it uses as much as digits as its factorization.

11915318713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 40.

The spelling of 11915318713 in words is "eleven billion, nine hundred fifteen million, three hundred eighteen thousand, seven hundred thirteen".