13805291305 has 16 divisors (see below), whose sum is σ = 17947528704. Its totient is φ = 10133622720.

The previous prime is 13805291273. The next prime is 13805291309. The reversal of 13805291305 is 50319250831.

It is a happy number.

13805291305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13805291305 - 2⁵ = 13805291273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13805291309) 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 15 ways as a sum of consecutive naturals, for example, 625041 + ... + 646750.

It is an arithmetic number, because the mean of its divisors is an integer number (1121720544).

Almost surely, 2^13805291305 is an apocalyptic number.

It is an amenable number.

13805291305 is a deficient number, since it is larger than the sum of its proper divisors (4142237399).

13805291305 is a wasteful number, since it uses less digits than its factorization.

13805291305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271976.

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 13805291305 in words is "thirteen billion, eight hundred five million, two hundred ninety-one thousand, three hundred five".