13344047350565 has 4 divisors (see below), whose sum is σ = 16012856820684. Its totient is φ = 10675237880448.

The previous prime is 13344047350537. The next prime is 13344047350681. The reversal of 13344047350565 is 56505374044331.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4317880358401 + 9026166992164 = 2077951^2 + 3004358^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13344047350565 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1334404735052 + ... + 1334404735061.

It is an arithmetic number, because the mean of its divisors is an integer number (4003214205171).

Almost surely, 2^{13344047350565} is an apocalyptic number.

It is an amenable number.

13344047350565 is a deficient number, since it is larger than the sum of its proper divisors (2668809470119).

13344047350565 is an equidigital number, since it uses as much as digits as its factorization.

13344047350565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2668809470118.

The product of its (nonzero) digits is 9072000, while the sum is 50.

The spelling of 13344047350565 in words is "thirteen trillion, three hundred forty-four billion, forty-seven million, three hundred fifty thousand, five hundred sixty-five".