13135634065 has 4 divisors (see below), whose sum is σ = 15762760884. Its totient is φ = 10508507248.

The previous prime is 13135634053. The next prime is 13135634081. The reversal of 13135634065 is 56043653131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56043653131 = 2141 ⋅26176391.

It can be written as a sum of positive squares in 2 ways, for example, as 8890981264 + 4244652801 = 94292^2 + 65151^2 .

It is a cyclic number.

It is not a de Polignac number, because 13135634065 - 2²³ = 13127245457 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, 1313563402 + ... + 1313563411.

It is an arithmetic number, because the mean of its divisors is an integer number (3940690221).

Almost surely, 2^13135634065 is an apocalyptic number.

It is an amenable number.

13135634065 is a deficient number, since it is larger than the sum of its proper divisors (2627126819).

13135634065 is an equidigital number, since it uses as much as digits as its factorization.

13135634065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2627126818.

The product of its (nonzero) digits is 97200, while the sum is 37.

The spelling of 13135634065 in words is "thirteen billion, one hundred thirty-five million, six hundred thirty-four thousand, sixty-five".