985131363131589 has 4 divisors (see below), whose sum is σ = 1313508484175456. Its totient is φ = 656754242087724.

The previous prime is 985131363131549. The next prime is 985131363131593.

985131363131589 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 not a de Polignac number, because 985131363131589 - 2¹² = 985131363127493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985131363131549) 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 in 3 ways as a sum of consecutive naturals, for example, 164188560521929 + ... + 164188560521934.

It is an arithmetic number, because the mean of its divisors is an integer number (328377121043864).

Almost surely, 2^{985131363131589} is an apocalyptic number.

It is an amenable number.

985131363131589 is a deficient number, since it is larger than the sum of its proper divisors (328377121043867).

985131363131589 is a wasteful number, since it uses less digits than its factorization.

985131363131589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328377121043866.

The product of its digits is 62985600, while the sum is 66.

The spelling of 985131363131589 in words is "nine hundred eighty-five trillion, one hundred thirty-one billion, three hundred sixty-three million, one hundred thirty-one thousand, five hundred eighty-nine".