441691666687 has 2 divisors, whose sum is σ = 441691666688. Its totient is φ = 441691666686.

The previous prime is 441691666627. The next prime is 441691666709. The reversal of 441691666687 is 786666196144.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-441691666687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (441691666627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220845833343 + 220845833344.

It is an arithmetic number, because the mean of its divisors is an integer number (220845833344).

Almost surely, 2^441691666687 is an apocalyptic number.

441691666687 is a deficient number, since it is larger than the sum of its proper divisors (1).

441691666687 is an equidigital number, since it uses as much as digits as its factorization.

441691666687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62705664, while the sum is 64.

The spelling of 441691666687 in words is "four hundred forty-one billion, six hundred ninety-one million, six hundred sixty-six thousand, six hundred eighty-seven".