13356036809 has 2 divisors, whose sum is σ = 13356036810. Its totient is φ = 13356036808.

The previous prime is 13356036787. The next prime is 13356036821. The reversal of 13356036809 is 90863065331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12369888400 + 986148409 = 111220^2 + 31403^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13356036809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13356036809.

It is not a weakly prime, because it can be changed into another prime (13356036829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6678018404 + 6678018405.

It is an arithmetic number, because the mean of its divisors is an integer number (6678018405).

Almost surely, 2^13356036809 is an apocalyptic number.

It is an amenable number.

13356036809 is a deficient number, since it is larger than the sum of its proper divisors (1).

13356036809 is an equidigital number, since it uses as much as digits as its factorization.

13356036809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 349920, while the sum is 44.

The spelling of 13356036809 in words is "thirteen billion, three hundred fifty-six million, thirty-six thousand, eight hundred nine".