1326340517265 has 12 divisors (see below), whose sum is σ = 2298990230004. Its totient is φ = 707381609184.

The previous prime is 1326340517239. The next prime is 1326340517351. The reversal of 1326340517265 is 5627150436231.

1326340517265 is a `hidden beast` number, since 1 + 3 + 2 + 634 + 0 + 5 + 1 + 7 + 2 + 6 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 534612493584 + 791728023681 = 731172^2 + 889791^2 .

It is not a de Polignac number, because 1326340517265 - 2¹⁶ = 1326340451729 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 29474233717 = 1326340517265 / (1 + 3 + 2 + 6 + 3 + 4 + 0 + 5 + 1 + 7 + 2 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 1326340517265.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14737116814 + ... + 14737116903.

It is an arithmetic number, because the mean of its divisors is an integer number (191582519167).

Almost surely, 2^{1326340517265} is an apocalyptic number.

1326340517265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1326340517265 is a deficient number, since it is larger than the sum of its proper divisors (972649712739).

1326340517265 is a wasteful number, since it uses less digits than its factorization.

1326340517265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29474233728 (or 29474233725 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The spelling of 1326340517265 in words is "one trillion, three hundred twenty-six billion, three hundred forty million, five hundred seventeen thousand, two hundred sixty-five".