13440344265265 has 16 divisors (see below), whose sum is σ = 16134333284160. Its totient is φ = 10748329358400.

The previous prime is 13440344265259. The next prime is 13440344265317. The reversal of 13440344265265 is 56256244304431.

It is not a de Polignac number, because 13440344265265 - 2⁴³ = 4644251243057 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171702706 + ... + 171780964.

It is an arithmetic number, because the mean of its divisors is an integer number (1008395830260).

Almost surely, 2^{13440344265265} is an apocalyptic number.

It is an amenable number.

13440344265265 is a deficient number, since it is larger than the sum of its proper divisors (2693989018895).

13440344265265 is an equidigital number, since it uses as much as digits as its factorization.

13440344265265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90432.

The product of its (nonzero) digits is 8294400, while the sum is 49.

Adding to 13440344265265 its reverse (56256244304431), we get a palindrome (69696588569696).

The spelling of 13440344265265 in words is "thirteen trillion, four hundred forty billion, three hundred forty-four million, two hundred sixty-five thousand, two hundred sixty-five".