13026330565 has 4 divisors (see below), whose sum is σ = 15631596684. Its totient is φ = 10421064448.

The previous prime is 13026330533. The next prime is 13026330589. The reversal of 13026330565 is 56503362031.

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 3027530529 + 9998800036 = 55023^2 + 99994^2 .

It is a cyclic number.

It is not a de Polignac number, because 13026330565 - 2⁵ = 13026330533 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13026330565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1302633052 + ... + 1302633061.

It is an arithmetic number, because the mean of its divisors is an integer number (3907899171).

Almost surely, 2^13026330565 is an apocalyptic number.

It is an amenable number.

13026330565 is a deficient number, since it is larger than the sum of its proper divisors (2605266119).

13026330565 is an equidigital number, since it uses as much as digits as its factorization.

13026330565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2605266118.

The product of its (nonzero) digits is 48600, while the sum is 34.

Adding to 13026330565 its reverse (56503362031), we get a palindrome (69529692596).

The spelling of 13026330565 in words is "thirteen billion, twenty-six million, three hundred thirty thousand, five hundred sixty-five".