13385806913 has 4 divisors (see below), whose sum is σ = 13817607168. Its totient is φ = 12954006660.

The previous prime is 13385806909. The next prime is 13385806937. The reversal of 13385806913 is 31960858331.

13385806913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31960858331 = 24019 ⋅1330649.

It is a cyclic number.

It is not a de Polignac number, because 13385806913 - 2² = 13385806909 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13385800913) 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 in 3 ways as a sum of consecutive naturals, for example, 215900081 + ... + 215900142.

It is an arithmetic number, because the mean of its divisors is an integer number (3454401792).

Almost surely, 2^13385806913 is an apocalyptic number.

It is an amenable number.

13385806913 is a deficient number, since it is larger than the sum of its proper divisors (431800255).

13385806913 is an equidigital number, since it uses as much as digits as its factorization.

13385806913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431800254.

The product of its (nonzero) digits is 466560, while the sum is 47.

The spelling of 13385806913 in words is "thirteen billion, three hundred eighty-five million, eight hundred six thousand, nine hundred thirteen".