444375372640517 has 2 divisors, whose sum is σ = 444375372640518. Its totient is φ = 444375372640516.

The previous prime is 444375372640427. The next prime is 444375372640519. The reversal of 444375372640517 is 715046273573444.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 273432979284481 + 170942393356036 = 16535809^2 + 13074494^2 .

It is a cyclic number.

It is not a de Polignac number, because 444375372640517 - 2¹⁸ = 444375372378373 is a prime.

Together with 444375372640519, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 444375372640517.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (444375372640519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222187686320258 + 222187686320259.

It is an arithmetic number, because the mean of its divisors is an integer number (222187686320259).

Almost surely, 2^{444375372640517} is an apocalyptic number.

It is an amenable number.

444375372640517 is a deficient number, since it is larger than the sum of its proper divisors (1).

444375372640517 is an equidigital number, since it uses as much as digits as its factorization.

444375372640517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 237081600, while the sum is 62.

The spelling of 444375372640517 in words is "four hundred forty-four trillion, three hundred seventy-five billion, three hundred seventy-two million, six hundred forty thousand, five hundred seventeen".