613318221413 has 2 divisors, whose sum is σ = 613318221414. Its totient is φ = 613318221412.

The previous prime is 613318221407. The next prime is 613318221427. The reversal of 613318221413 is 314122813316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 410212068484 + 203106152929 = 640478^2 + 450673^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-613318221413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (613318221913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306659110706 + 306659110707.

It is an arithmetic number, because the mean of its divisors is an integer number (306659110707).

Almost surely, 2^613318221413 is an apocalyptic number.

It is an amenable number.

613318221413 is a deficient number, since it is larger than the sum of its proper divisors (1).

613318221413 is an equidigital number, since it uses as much as digits as its factorization.

613318221413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 35.

The spelling of 613318221413 in words is "six hundred thirteen billion, three hundred eighteen million, two hundred twenty-one thousand, four hundred thirteen".