13809765441 has 4 divisors (see below), whose sum is σ = 18413020592. Its totient is φ = 9206510292.

The previous prime is 13809765433. The next prime is 13809765443. The reversal of 13809765441 is 14456790831.

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.

It is not a de Polignac number, because 13809765441 - 2³ = 13809765433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13809765443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2301627571 + ... + 2301627576.

It is an arithmetic number, because the mean of its divisors is an integer number (4603255148).

Almost surely, 2^13809765441 is an apocalyptic number.

It is an amenable number.

13809765441 is a deficient number, since it is larger than the sum of its proper divisors (4603255151).

13809765441 is an equidigital number, since it uses as much as digits as its factorization.

13809765441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4603255150.

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 13809765441 in words is "thirteen billion, eight hundred nine million, seven hundred sixty-five thousand, four hundred forty-one".