613243564649 has 2 divisors, whose sum is σ = 613243564650. Its totient is φ = 613243564648.

The previous prime is 613243564639. The next prime is 613243564673. The reversal of 613243564649 is 946465342316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 504287457424 + 108956107225 = 710132^2 + 330085^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-613243564649 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 613243564649.

It is not a weakly prime, because it can be changed into another prime (613243564639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306621782324 + 306621782325.

It is an arithmetic number, because the mean of its divisors is an integer number (306621782325).

Almost surely, 2^613243564649 is an apocalyptic number.

It is an amenable number.

613243564649 is a deficient number, since it is larger than the sum of its proper divisors (1).

613243564649 is an equidigital number, since it uses as much as digits as its factorization.

613243564649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11197440, while the sum is 53.

The spelling of 613243564649 in words is "six hundred thirteen billion, two hundred forty-three million, five hundred sixty-four thousand, six hundred forty-nine".