442242444626413 has 2 divisors, whose sum is σ = 442242444626414. Its totient is φ = 442242444626412.

The previous prime is 442242444626377. The next prime is 442242444626417. The reversal of 442242444626413 is 314626444242244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 434764117596004 + 7478327030409 = 20850998^2 + 2734653^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442242444626413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442242444626417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221121222313206 + 221121222313207.

It is an arithmetic number, because the mean of its divisors is an integer number (221121222313207).

Almost surely, 2^{442242444626413} is an apocalyptic number.

It is an amenable number.

442242444626413 is a deficient number, since it is larger than the sum of its proper divisors (1).

442242444626413 is an equidigital number, since it uses as much as digits as its factorization.

442242444626413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28311552, while the sum is 52.

Adding to 442242444626413 its reverse (314626444242244), we get a palindrome (756868888868657).

The spelling of 442242444626413 in words is "four hundred forty-two trillion, two hundred forty-two billion, four hundred forty-four million, six hundred twenty-six thousand, four hundred thirteen".