13144705369 has 4 divisors (see below), whose sum is σ = 13153170996. Its totient is φ = 13136239744.

The previous prime is 13144705363. The next prime is 13144705417. The reversal of 13144705369 is 96350744131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96350744131 = 233 ⋅413522507.

It can be written as a sum of positive squares in 2 ways, for example, as 5593095369 + 7551610000 = 74787^2 + 86900^2 .

It is a cyclic number.

It is not a de Polignac number, because 13144705369 - 2¹¹ = 13144703321 is a prime.

It is a super-2 number, since 2×13144705369² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13144705363) 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, 4230484 + ... + 4233589.

It is an arithmetic number, because the mean of its divisors is an integer number (3288292749).

Almost surely, 2^13144705369 is an apocalyptic number.

It is an amenable number.

13144705369 is a deficient number, since it is larger than the sum of its proper divisors (8465627).

13144705369 is an equidigital number, since it uses as much as digits as its factorization.

13144705369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8465626.

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 13144705369 in words is "thirteen billion, one hundred forty-four million, seven hundred five thousand, three hundred sixty-nine".