13143203165 has 24 divisors (see below), whose sum is σ = 16705511928. Its totient is φ = 9925332480.

The previous prime is 13143203123. The next prime is 13143203173. The reversal of 13143203165 is 56130234131.

It can be written as a sum of positive squares in 4 ways, for example, as 2682618436 + 10460584729 = 51794^2 + 102277^2 .

It is not a de Polignac number, because 13143203165 - 2¹⁴ = 13143186781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 494249 + ... + 520161.

It is an arithmetic number, because the mean of its divisors is an integer number (696062997).

Almost surely, 2^13143203165 is an apocalyptic number.

It is an amenable number.

13143203165 is a deficient number, since it is larger than the sum of its proper divisors (3562308763).

13143203165 is a wasteful number, since it uses less digits than its factorization.

13143203165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26237 (or 26218 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

Adding to 13143203165 its reverse (56130234131), we get a palindrome (69273437296).

The spelling of 13143203165 in words is "thirteen billion, one hundred forty-three million, two hundred three thousand, one hundred sixty-five".