985966669589 has 4 divisors (see below), whose sum is σ = 1075600003200. Its totient is φ = 896333335980.

The previous prime is 985966669529. The next prime is 985966669601.

985966669589 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-985966669589 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 985966669589.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985966669529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44816666789 + ... + 44816666810.

It is an arithmetic number, because the mean of its divisors is an integer number (268900000800).

Almost surely, 2^985966669589 is an apocalyptic number.

It is an amenable number.

985966669589 is a deficient number, since it is larger than the sum of its proper divisors (89633333611).

985966669589 is a wasteful number, since it uses less digits than its factorization.

985966669589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89633333610.

The product of its digits is 13604889600, while the sum is 86.

The spelling of 985966669589 in words is "nine hundred eighty-five billion, nine hundred sixty-six million, six hundred sixty-nine thousand, five hundred eighty-nine".