445365043503169 has 2 divisors, whose sum is σ = 445365043503170. Its totient is φ = 445365043503168.

The previous prime is 445365043503139. The next prime is 445365043503217. The reversal of 445365043503169 is 961305340563544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 437609581574400 + 7755461928769 = 20919120^2 + 2784863^2 .

It is a cyclic number.

It is not a de Polignac number, because 445365043503169 - 2⁵ = 445365043503137 is a prime.

It is a super-2 number, since 2×445365043503169² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (445365043503139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222682521751584 + 222682521751585.

It is an arithmetic number, because the mean of its divisors is an integer number (222682521751585).

Almost surely, 2^{445365043503169} is an apocalyptic number.

It is an amenable number.

445365043503169 is a deficient number, since it is larger than the sum of its proper divisors (1).

445365043503169 is an equidigital number, since it uses as much as digits as its factorization.

445365043503169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984000, while the sum is 58.

The spelling of 445365043503169 in words is "four hundred forty-five trillion, three hundred sixty-five billion, forty-three million, five hundred three thousand, one hundred sixty-nine".