13684321065 has 16 divisors (see below), whose sum is σ = 21902525568. Its totient is φ = 7295767296.

The previous prime is 13684321051. The next prime is 13684321073. The reversal of 13684321065 is 56012348631.

It is not a de Polignac number, because 13684321065 - 2¹¹ = 13684319017 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113584 + ... + 200673.

It is an arithmetic number, because the mean of its divisors is an integer number (1368907848).

Almost surely, 2^13684321065 is an apocalyptic number.

13684321065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13684321065 is a deficient number, since it is larger than the sum of its proper divisors (8218204503).

13684321065 is a wasteful number, since it uses less digits than its factorization.

13684321065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317168.

The product of its (nonzero) digits is 103680, while the sum is 39.

Adding to 13684321065 its reverse (56012348631), we get a palindrome (69696669696).

The spelling of 13684321065 in words is "thirteen billion, six hundred eighty-four million, three hundred twenty-one thousand, sixty-five".