445041265465861 has 2 divisors, whose sum is σ = 445041265465862. Its totient is φ = 445041265465860.

The previous prime is 445041265465751. The next prime is 445041265465963. The reversal of 445041265465861 is 168564562140544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 338440410562500 + 106600854903361 = 18396750^2 + 10324769^2 .

It is a cyclic number.

It is not a de Polignac number, because 445041265465861 - 2¹¹ = 445041265463813 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 445041265465861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445041265465361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222520632732930 + 222520632732931.

It is an arithmetic number, because the mean of its divisors is an integer number (222520632732931).

Almost surely, 2^{445041265465861} is an apocalyptic number.

It is an amenable number.

445041265465861 is a deficient number, since it is larger than the sum of its proper divisors (1).

445041265465861 is an equidigital number, since it uses as much as digits as its factorization.

445041265465861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110592000, while the sum is 61.

The spelling of 445041265465861 in words is "four hundred forty-five trillion, forty-one billion, two hundred sixty-five million, four hundred sixty-five thousand, eight hundred sixty-one".