13144320516 has 24 divisors (see below), whose sum is σ = 31058312320. Its totient is φ = 4325978592.

The previous prime is 13144320493. The next prime is 13144320521. The reversal of 13144320516 is 61502344131.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6931711 + ... + 6933606.

Almost surely, 2^13144320516 is an apocalyptic number.

It is an amenable number.

13144320516 is an abundant number, since it is smaller than the sum of its proper divisors (17913991804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13144320516 is a wasteful number, since it uses less digits than its factorization.

13144320516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13865403 (or 13865401 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 13144320516 its reverse (61502344131), we get a palindrome (74646664647).

The spelling of 13144320516 in words is "thirteen billion, one hundred forty-four million, three hundred twenty thousand, five hundred sixteen".