13085885505 has 32 divisors (see below), whose sum is σ = 26103794688. Its totient is φ = 5438289600.

The previous prime is 13085885419. The next prime is 13085885539. The reversal of 13085885505 is 50558858031.

It is a happy number.

It is not a de Polignac number, because 13085885505 - 2²⁰ = 13084836929 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5663731 + ... + 5666040.

It is an arithmetic number, because the mean of its divisors is an integer number (815743584).

Almost surely, 2^13085885505 is an apocalyptic number.

13085885505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13085885505 is a deficient number, since it is larger than the sum of its proper divisors (13017909183).

13085885505 is a wasteful number, since it uses less digits than its factorization.

13085885505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11329797.

The product of its (nonzero) digits is 960000, while the sum is 48.

The spelling of 13085885505 in words is "thirteen billion, eighty-five million, eight hundred eighty-five thousand, five hundred five".