13247065765 has 8 divisors (see below), whose sum is σ = 16284198168. Its totient is φ = 10339173120.

The previous prime is 13247065751. The next prime is 13247065781. The reversal of 13247065765 is 56756074231.

13247065765 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 42068196 + 13204997569 = 6486^2 + 114913^2 .

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

It is not a de Polignac number, because 13247065765 - 2⁹ = 13247065253 is a prime.

It is a Duffinian number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 32309712 + ... + 32310121.

It is an arithmetic number, because the mean of its divisors is an integer number (2035524771).

Almost surely, 2^13247065765 is an apocalyptic number.

It is an amenable number.

13247065765 is a deficient number, since it is larger than the sum of its proper divisors (3037132403).

13247065765 is an equidigital number, since it uses as much as digits as its factorization.

13247065765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64619879.

The product of its (nonzero) digits is 1058400, while the sum is 46.

The spelling of 13247065765 in words is "thirteen billion, two hundred forty-seven million, sixty-five thousand, seven hundred sixty-five".