12814734665 has 4 divisors (see below), whose sum is σ = 15377681604. Its totient is φ = 10251787728.

The previous prime is 12814734617. The next prime is 12814734679. The reversal of 12814734665 is 56643741821.

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 2713680649 + 10101054016 = 52093^2 + 100504^2 .

It is a cyclic number.

It is not a de Polignac number, because 12814734665 - 2¹⁴ = 12814718281 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 1281473462 + ... + 1281473471.

It is an arithmetic number, because the mean of its divisors is an integer number (3844420401).

Almost surely, 2^12814734665 is an apocalyptic number.

It is an amenable number.

12814734665 is a deficient number, since it is larger than the sum of its proper divisors (2562946939).

12814734665 is an equidigital number, since it uses as much as digits as its factorization.

12814734665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2562946938.

The product of its digits is 967680, while the sum is 47.

The spelling of 12814734665 in words is "twelve billion, eight hundred fourteen million, seven hundred thirty-four thousand, six hundred sixty-five".