13313639617 has 4 divisors (see below), whose sum is σ = 13315700356. Its totient is φ = 13311578880.

The previous prime is 13313639519. The next prime is 13313639623. The reversal of 13313639617 is 71693631331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71693631331 = 7 ⋅10241947333.

It can be written as a sum of positive squares in 2 ways, for example, as 10446679681 + 2866959936 = 102209^2 + 53544^2 .

It is a cyclic number.

It is not a de Polignac number, because 13313639617 - 2¹¹ = 13313637569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13313639687) by changing a digit.

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, 1020648 + ... + 1033609.

It is an arithmetic number, because the mean of its divisors is an integer number (3328925089).

Almost surely, 2^13313639617 is an apocalyptic number.

It is an amenable number.

13313639617 is a deficient number, since it is larger than the sum of its proper divisors (2060739).

13313639617 is an equidigital number, since it uses as much as digits as its factorization.

13313639617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2060738.

The product of its digits is 183708, while the sum is 43.

The spelling of 13313639617 in words is "thirteen billion, three hundred thirteen million, six hundred thirty-nine thousand, six hundred seventeen".