13264502609 has 4 divisors (see below), whose sum is σ = 13395834420. Its totient is φ = 13133170800.

The previous prime is 13264502597. The next prime is 13264502633. The reversal of 13264502609 is 90620546231.

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 9358627600 + 3905875009 = 96740^2 + 62497^2 .

It is a cyclic number.

It is not a de Polignac number, because 13264502609 - 2⁴ = 13264502593 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13264502659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65665754 + ... + 65665955.

It is an arithmetic number, because the mean of its divisors is an integer number (3348958605).

Almost surely, 2^13264502609 is an apocalyptic number.

It is an amenable number.

13264502609 is a deficient number, since it is larger than the sum of its proper divisors (131331811).

13264502609 is a wasteful number, since it uses less digits than its factorization.

13264502609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131331810.

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 13264502609 in words is "thirteen billion, two hundred sixty-four million, five hundred two thousand, six hundred nine".