611442241213 has 2 divisors, whose sum is σ = 611442241214. Its totient is φ = 611442241212.

The previous prime is 611442241147. The next prime is 611442241231. The reversal of 611442241213 is 312142244116.

It is a happy number.

Together with next prime (611442241231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 590603009049 + 20839232164 = 768507^2 + 144358^2 .

It is a cyclic number.

It is not a de Polignac number, because 611442241213 - 2²⁵ = 611408686781 is a prime.

It is a super-2 number, since 2×611442241213² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611442241243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305721120606 + 305721120607.

It is an arithmetic number, because the mean of its divisors is an integer number (305721120607).

Almost surely, 2^611442241213 is an apocalyptic number.

It is an amenable number.

611442241213 is a deficient number, since it is larger than the sum of its proper divisors (1).

611442241213 is an equidigital number, since it uses as much as digits as its factorization.

611442241213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 31.

Adding to 611442241213 its reverse (312142244116), we get a palindrome (923584485329).

The spelling of 611442241213 in words is "six hundred eleven billion, four hundred forty-two million, two hundred forty-one thousand, two hundred thirteen".