13246730765 has 4 divisors (see below), whose sum is σ = 15896076924. Its totient is φ = 10597384608.

The previous prime is 13246730759. The next prime is 13246730773. The reversal of 13246730765 is 56703764231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56703764231 = 17 ⋅3335515543.

It can be written as a sum of positive squares in 2 ways, for example, as 5959376809 + 7287353956 = 77197^2 + 85366^2 .

It is a cyclic number.

It is not a de Polignac number, because 13246730765 - 2⁸ = 13246730509 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1324673072 + ... + 1324673081.

It is an arithmetic number, because the mean of its divisors is an integer number (3974019231).

Almost surely, 2^13246730765 is an apocalyptic number.

It is an amenable number.

13246730765 is a deficient number, since it is larger than the sum of its proper divisors (2649346159).

13246730765 is an equidigital number, since it uses as much as digits as its factorization.

13246730765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2649346158.

The product of its (nonzero) digits is 635040, while the sum is 44.

The spelling of 13246730765 in words is "thirteen billion, two hundred forty-six million, seven hundred thirty thousand, seven hundred sixty-five".