442266644191 has 2 divisors, whose sum is σ = 442266644192. Its totient is φ = 442266644190.

The previous prime is 442266644117. The next prime is 442266644251. The reversal of 442266644191 is 191446662244.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 442266644191 - 2¹⁹ = 442266119903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442266644101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221133322095 + 221133322096.

It is an arithmetic number, because the mean of its divisors is an integer number (221133322096).

Almost surely, 2^442266644191 is an apocalyptic number.

442266644191 is a deficient number, since it is larger than the sum of its proper divisors (1).

442266644191 is an equidigital number, since it uses as much as digits as its factorization.

442266644191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1990656, while the sum is 49.

The spelling of 442266644191 in words is "four hundred forty-two billion, two hundred sixty-six million, six hundred forty-four thousand, one hundred ninety-one".