13475105909 has 4 divisors (see below), whose sum is σ = 13487390604. Its totient is φ = 13462821216.

The previous prime is 13475105873. The next prime is 13475105911. The reversal of 13475105909 is 90950157431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7661500900 + 5813605009 = 87530^2 + 76247^2 .

It is a cyclic number.

It is not a de Polignac number, because 13475105909 - 2¹⁶ = 13475040373 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13475105909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13475105309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6140702 + ... + 6142895.

It is an arithmetic number, because the mean of its divisors is an integer number (3371847651).

Almost surely, 2^13475105909 is an apocalyptic number.

It is an amenable number.

13475105909 is a deficient number, since it is larger than the sum of its proper divisors (12284695).

13475105909 is a wasteful number, since it uses less digits than its factorization.

13475105909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12284694.

The product of its (nonzero) digits is 170100, while the sum is 44.

The spelling of 13475105909 in words is "thirteen billion, four hundred seventy-five million, one hundred five thousand, nine hundred nine".