13144565387 has 4 divisors (see below), whose sum is σ = 13265157840. Its totient is φ = 13023972936.

The previous prime is 13144565383. The next prime is 13144565429. The reversal of 13144565387 is 78356544131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13144565387 - 2² = 13144565383 is a prime.

It is a super-3 number, since 3×13144565387³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13144565383) 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, 60296063 + ... + 60296280.

It is an arithmetic number, because the mean of its divisors is an integer number (3316289460).

Almost surely, 2^13144565387 is an apocalyptic number.

13144565387 is a deficient number, since it is larger than the sum of its proper divisors (120592453).

13144565387 is a wasteful number, since it uses less digits than its factorization.

13144565387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120592452.

The product of its digits is 1209600, while the sum is 47.

The spelling of 13144565387 in words is "thirteen billion, one hundred forty-four million, five hundred sixty-five thousand, three hundred eighty-seven".