13247065813 has 2 divisors, whose sum is σ = 13247065814. Its totient is φ = 13247065812.

The previous prime is 13247065789. The next prime is 13247065879. The reversal of 13247065813 is 31856074231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11551520484 + 1695545329 = 107478^2 + 41177^2 .

It is a cyclic number.

It is not a de Polignac number, because 13247065813 - 2⁵ = 13247065781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13247065883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6623532906 + 6623532907.

It is an arithmetic number, because the mean of its divisors is an integer number (6623532907).

Almost surely, 2^13247065813 is an apocalyptic number.

It is an amenable number.

13247065813 is a deficient number, since it is larger than the sum of its proper divisors (1).

13247065813 is an equidigital number, since it uses as much as digits as its factorization.

13247065813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 13247065813 in words is "thirteen billion, two hundred forty-seven million, sixty-five thousand, eight hundred thirteen".