13015718761 has 2 divisors, whose sum is σ = 13015718762. Its totient is φ = 13015718760.

The previous prime is 13015718711. The next prime is 13015718773. The reversal of 13015718761 is 16781751031.

It is a happy number.

13015718761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12625893225 + 389825536 = 112365^2 + 19744^2 .

It is an emirp because it is prime and its reverse (16781751031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13015718761 - 2²⁵ = 12982164329 is a prime.

It is not a weakly prime, because it can be changed into another prime (13015718711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6507859380 + 6507859381.

It is an arithmetic number, because the mean of its divisors is an integer number (6507859381).

Almost surely, 2^13015718761 is an apocalyptic number.

It is an amenable number.

13015718761 is a deficient number, since it is larger than the sum of its proper divisors (1).

13015718761 is an equidigital number, since it uses as much as digits as its factorization.

13015718761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 40.

The spelling of 13015718761 in words is "thirteen billion, fifteen million, seven hundred eighteen thousand, seven hundred sixty-one".