4445566673 has 2 divisors, whose sum is σ = 4445566674. Its totient is φ = 4445566672.

The previous prime is 4445566649. The next prime is 4445566679. The reversal of 4445566673 is 3766655444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2372858944 + 2072707729 = 48712^2 + 45527^2 .

It is a cyclic number.

It is not a de Polignac number, because 4445566673 - 2¹⁸ = 4445304529 is a prime.

It is not a weakly prime, because it can be changed into another prime (4445566679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2222783336 + 2222783337.

It is an arithmetic number, because the mean of its divisors is an integer number (2222783337).

Almost surely, 2^4445566673 is an apocalyptic number.

It is an amenable number.

4445566673 is a deficient number, since it is larger than the sum of its proper divisors (1).

4445566673 is an equidigital number, since it uses as much as digits as its factorization.

4445566673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7257600, while the sum is 50.

The square root of 4445566673 is about 66675.0828495923. The cubic root of 4445566673 is about 1644.2797539220.

The spelling of 4445566673 in words is "four billion, four hundred forty-five million, five hundred sixty-six thousand, six hundred seventy-three".