445494644234693 has 2 divisors, whose sum is σ = 445494644234694. Its totient is φ = 445494644234692.

The previous prime is 445494644234599. The next prime is 445494644234747. The reversal of 445494644234693 is 396432446494544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 363060174923044 + 82434469311649 = 19054138^2 + 9079343^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445494644234693 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445494644234993) 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, 222747322117346 + 222747322117347.

It is an arithmetic number, because the mean of its divisors is an integer number (222747322117347).

Almost surely, 2^{445494644234693} is an apocalyptic number.

It is an amenable number.

445494644234693 is a deficient number, since it is larger than the sum of its proper divisors (1).

445494644234693 is an equidigital number, since it uses as much as digits as its factorization.

445494644234693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4299816960, while the sum is 71.

The spelling of 445494644234693 in words is "four hundred forty-five trillion, four hundred ninety-four billion, six hundred forty-four million, two hundred thirty-four thousand, six hundred ninety-three".