13312641605 has 8 divisors (see below), whose sum is σ = 16914885912. Its totient is φ = 10023635968.

The previous prime is 13312641583. The next prime is 13312641697. The reversal of 13312641605 is 50614621331.

It can be written as a sum of positive squares in 4 ways, for example, as 7397032036 + 5915609569 = 86006^2 + 76913^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13312641605 - 2²⁴ = 13295864389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78309572 + ... + 78309741.

It is an arithmetic number, because the mean of its divisors is an integer number (2114360739).

Almost surely, 2^13312641605 is an apocalyptic number.

It is an amenable number.

13312641605 is a deficient number, since it is larger than the sum of its proper divisors (3602244307).

13312641605 is a wasteful number, since it uses less digits than its factorization.

13312641605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156619335.

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 13312641605 in words is "thirteen billion, three hundred twelve million, six hundred forty-one thousand, six hundred five".