613243556441 has 2 divisors, whose sum is σ = 613243556442. Its totient is φ = 613243556440.

The previous prime is 613243556339. The next prime is 613243556449. The reversal of 613243556441 is 144655342316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 574835396041 + 38408160400 = 758179^2 + 195980^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-613243556441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 613243556392 and 613243556401.

It is not a weakly prime, because it can be changed into another prime (613243556449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306621778220 + 306621778221.

It is an arithmetic number, because the mean of its divisors is an integer number (306621778221).

Almost surely, 2^613243556441 is an apocalyptic number.

It is an amenable number.

613243556441 is a deficient number, since it is larger than the sum of its proper divisors (1).

613243556441 is an equidigital number, since it uses as much as digits as its factorization.

613243556441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1036800, while the sum is 44.

Adding to 613243556441 its reverse (144655342316), we get a palindrome (757898898757).

The spelling of 613243556441 in words is "six hundred thirteen billion, two hundred forty-three million, five hundred fifty-six thousand, four hundred forty-one".