13139616317 has 8 divisors (see below), whose sum is σ = 13410141624. Its totient is φ = 12869928448.

The previous prime is 13139616313. The next prime is 13139616337. The reversal of 13139616317 is 71361693131.

It can be written as a sum of positive squares in 4 ways, for example, as 7447517401 + 5692098916 = 86299^2 + 75446^2 .

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 13139616317 - 2² = 13139616313 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13139616313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177608 + ... + 240465.

It is an arithmetic number, because the mean of its divisors is an integer number (1676267703).

Almost surely, 2^13139616317 is an apocalyptic number.

It is an amenable number.

13139616317 is a deficient number, since it is larger than the sum of its proper divisors (270525307).

13139616317 is an equidigital number, since it uses as much as digits as its factorization.

13139616317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418719.

The product of its digits is 61236, while the sum is 41.

The spelling of 13139616317 in words is "thirteen billion, one hundred thirty-nine million, six hundred sixteen thousand, three hundred seventeen".