613566306313 has 2 divisors, whose sum is σ = 613566306314. Its totient is φ = 613566306312.

The previous prime is 613566306247. The next prime is 613566306317. The reversal of 613566306313 is 313603665316.

613566306313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 321321189904 + 292245116409 = 566852^2 + 540597^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-613566306313 is a prime.

It is a super-2 number, since 2×613566306313² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 613566306313.

It is not a weakly prime, because it can be changed into another prime (613566306317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306783153156 + 306783153157.

It is an arithmetic number, because the mean of its divisors is an integer number (306783153157).

Almost surely, 2^613566306313 is an apocalyptic number.

It is an amenable number.

613566306313 is a deficient number, since it is larger than the sum of its proper divisors (1).

613566306313 is an equidigital number, since it uses as much as digits as its factorization.

613566306313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 524880, while the sum is 43.

The spelling of 613566306313 in words is "six hundred thirteen billion, five hundred sixty-six million, three hundred six thousand, three hundred thirteen".