985536635589 has 48 divisors (see below), whose sum is σ = 1589674754304. Its totient is φ = 583235251200.

The previous prime is 985536635581. The next prime is 985536635591.

985536635589 is a `hidden beast` number, since 9 + 8 + 5 + 5 + 3 + 6 + 6 + 35 + 589 = 666.

985536635589 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 985536635589 - 2³ = 985536635581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985536635581) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1770169 + ... + 2259329.

It is an arithmetic number, because the mean of its divisors is an integer number (33118224048).

Almost surely, 2^985536635589 is an apocalyptic number.

985536635589 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

It is an amenable number.

985536635589 is a deficient number, since it is larger than the sum of its proper divisors (604138118715).

985536635589 is a wasteful number, since it uses less digits than its factorization.

985536635589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489658 (or 489655 counting only the distinct ones).

The product of its digits is 1049760000, while the sum is 72.

The spelling of 985536635589 in words is "nine hundred eighty-five billion, five hundred thirty-six million, six hundred thirty-five thousand, five hundred eighty-nine".