13286815813 has 2 divisors, whose sum is σ = 13286815814. Its totient is φ = 13286815812.

The previous prime is 13286815807. The next prime is 13286815859. The reversal of 13286815813 is 31851868231.

It is an a-pointer prime, because the next prime (13286815859) can be obtained adding 13286815813 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6812521444 + 6474294369 = 82538^2 + 80463^2 .

It is a cyclic number.

It is not a de Polignac number, because 13286815813 - 2²⁵ = 13253261381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13286815013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6643407906 + 6643407907.

It is an arithmetic number, because the mean of its divisors is an integer number (6643407907).

Almost surely, 2^13286815813 is an apocalyptic number.

It is an amenable number.

13286815813 is a deficient number, since it is larger than the sum of its proper divisors (1).

13286815813 is an equidigital number, since it uses as much as digits as its factorization.

13286815813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 276480, while the sum is 46.

The spelling of 13286815813 in words is "thirteen billion, two hundred eighty-six million, eight hundred fifteen thousand, eight hundred thirteen".