444343205321 has 2 divisors, whose sum is σ = 444343205322. Its totient is φ = 444343205320.

The previous prime is 444343205269. The next prime is 444343205347. The reversal of 444343205321 is 123502343444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 444340894921 + 2310400 = 666589^2 + 1520^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-444343205321 is a prime.

It is a super-2 number, since 2×444343205321² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (444343201321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222171602660 + 222171602661.

It is an arithmetic number, because the mean of its divisors is an integer number (222171602661).

Almost surely, 2^444343205321 is an apocalyptic number.

It is an amenable number.

444343205321 is a deficient number, since it is larger than the sum of its proper divisors (1).

444343205321 is an equidigital number, since it uses as much as digits as its factorization.

444343205321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 35.

Adding to 444343205321 its reverse (123502343444), we get a palindrome (567845548765).

The spelling of 444343205321 in words is "four hundred forty-four billion, three hundred forty-three million, two hundred five thousand, three hundred twenty-one".