13719664799 has 4 divisors (see below), whose sum is σ = 14441752440. Its totient is φ = 12997577160.

The previous prime is 13719664789. The next prime is 13719664807. The reversal of 13719664799 is 99746691731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99746691731 = 67 ⋅1488756593.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13719664799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13719664789) 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, 361043792 + ... + 361043829.

It is an arithmetic number, because the mean of its divisors is an integer number (3610438110).

Almost surely, 2^13719664799 is an apocalyptic number.

13719664799 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

13719664799 is a deficient number, since it is larger than the sum of its proper divisors (722087641).

13719664799 is an equidigital number, since it uses as much as digits as its factorization.

13719664799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722087640.

The product of its digits is 15431472, while the sum is 62.

The spelling of 13719664799 in words is "thirteen billion, seven hundred nineteen million, six hundred sixty-four thousand, seven hundred ninety-nine".