613611611243 has 2 divisors, whose sum is σ = 613611611244. Its totient is φ = 613611611242.

The previous prime is 613611611113. The next prime is 613611611251. The reversal of 613611611243 is 342116116316.

613611611243 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 is a cyclic number.

It is not a de Polignac number, because 613611611243 - 2²⁰ = 613610562667 is a prime.

It is not a weakly prime, because it can be changed into another prime (613611611273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306805805621 + 306805805622.

It is an arithmetic number, because the mean of its divisors is an integer number (306805805622).

Almost surely, 2^613611611243 is an apocalyptic number.

613611611243 is a deficient number, since it is larger than the sum of its proper divisors (1).

613611611243 is an equidigital number, since it uses as much as digits as its factorization.

613611611243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 35.

Adding to 613611611243 its reverse (342116116316), we get a palindrome (955727727559).

The spelling of 613611611243 in words is "six hundred thirteen billion, six hundred eleven million, six hundred eleven thousand, two hundred forty-three".