985745666547589 has 2 divisors, whose sum is σ = 985745666547590. Its totient is φ = 985745666547588.

The previous prime is 985745666547571. The next prime is 985745666547703.

985745666547589 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 744320728546564 + 241424938001025 = 27282242^2 + 15537855^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 985745666547589 - 2⁵ = 985745666547557 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 985745666547497 and 985745666547506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (980745666547589) 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, 492872833273794 + 492872833273795.

It is an arithmetic number, because the mean of its divisors is an integer number (492872833273795).

Almost surely, 2^{985745666547589} is an apocalyptic number.

It is an amenable number.

985745666547589 is a deficient number, since it is larger than the sum of its proper divisors (1).

985745666547589 is an equidigital number, since it uses as much as digits as its factorization.

985745666547589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 548674560000, while the sum is 94.

The spelling of 985745666547589 in words is "nine hundred eighty-five trillion, seven hundred forty-five billion, six hundred sixty-six million, five hundred forty-seven thousand, five hundred eighty-nine".