82081337589 has 6 divisors (see below), whose sum is σ = 118561932086. Its totient is φ = 54720891720.

The previous prime is 82081337551. The next prime is 82081337617. The reversal of 82081337589 is 98573318028.

82081337589 is a `hidden beast` number, since 8 + 20 + 8 + 1 + 3 + 37 + 589 = 666.

It can be written as a sum of positive squares in only one way, i.e., 43173775089 + 38907562500 = 207783^2 + 197250^2 .

It is not a de Polignac number, because 82081337589 - 2⁷ = 82081337461 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 (82081337189) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4560074302 + ... + 4560074319.

Almost surely, 2^82081337589 is an apocalyptic number.

It is an amenable number.

82081337589 is a deficient number, since it is larger than the sum of its proper divisors (36480594497).

82081337589 is a wasteful number, since it uses less digits than its factorization.

82081337589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9120148627 (or 9120148624 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 82081337589 in words is "eighty-two billion, eighty-one million, three hundred thirty-seven thousand, five hundred eighty-nine".