13312451444065 has 8 divisors (see below), whose sum is σ = 15974968880808. Its totient is φ = 10649943056640.

The previous prime is 13312451443981. The next prime is 13312451444069. The reversal of 13312451444065 is 56044415421331.

It can be written as a sum of positive squares in 4 ways, for example, as 20622970449 + 13291828473616 = 143607^2 + 3645796^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13312451444065 - 2⁹ = 13312451443553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13312451444069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1561719 + ... + 5391091.

It is an arithmetic number, because the mean of its divisors is an integer number (1996871110101).

Almost surely, 2^{13312451444065} is an apocalyptic number.

It is an amenable number.

13312451444065 is a deficient number, since it is larger than the sum of its proper divisors (2662517436743).

13312451444065 is an equidigital number, since it uses as much as digits as its factorization.

13312451444065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4524659.

The product of its (nonzero) digits is 691200, while the sum is 43.

Adding to 13312451444065 its reverse (56044415421331), we get a palindrome (69356866865396).

The spelling of 13312451444065 in words is "thirteen trillion, three hundred twelve billion, four hundred fifty-one million, four hundred forty-four thousand, sixty-five".