13505164171 has 4 divisors (see below), whose sum is σ = 13521574672. Its totient is φ = 13488753672.

The previous prime is 13505164163. The next prime is 13505164247. The reversal of 13505164171 is 17146150531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17146150531 = 19483 ⋅880057.

It is a cyclic number.

It is not a de Polignac number, because 13505164171 - 2³ = 13505164163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13505164111) 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, 8204016 + ... + 8205661.

It is an arithmetic number, because the mean of its divisors is an integer number (3380393668).

Almost surely, 2^13505164171 is an apocalyptic number.

13505164171 is a deficient number, since it is larger than the sum of its proper divisors (16410501).

13505164171 is an equidigital number, since it uses as much as digits as its factorization.

13505164171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16410500.

The product of its (nonzero) digits is 12600, while the sum is 34.

The spelling of 13505164171 in words is "thirteen billion, five hundred five million, one hundred sixty-four thousand, one hundred seventy-one".