13179774809 has 2 divisors, whose sum is σ = 13179774810. Its totient is φ = 13179774808.

The previous prime is 13179774791. The next prime is 13179774851. The reversal of 13179774809 is 90847797131.

13179774809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12011502409 + 1168272400 = 109597^2 + 34180^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13179774809 is a prime.

It is not a weakly prime, because it can be changed into another prime (13179774889) 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, 6589887404 + 6589887405.

It is an arithmetic number, because the mean of its divisors is an integer number (6589887405).

Almost surely, 2^13179774809 is an apocalyptic number.

It is an amenable number.

13179774809 is a deficient number, since it is larger than the sum of its proper divisors (1).

13179774809 is an equidigital number, since it uses as much as digits as its factorization.

13179774809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2667168, while the sum is 56.

The spelling of 13179774809 in words is "thirteen billion, one hundred seventy-nine million, seven hundred seventy-four thousand, eight hundred nine".