82089585918 has 112 divisors (see below), whose sum is σ = 195323472000. Its totient is φ = 25791028560.

The previous prime is 82089585917. The next prime is 82089585931. The reversal of 82089585918 is 81958598028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82089585917) 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 in 55 ways as a sum of consecutive naturals, for example, 5505253 + ... + 5520143.

Almost surely, 2^82089585918 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82089585918, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97661736000).

82089585918 is an abundant number, since it is smaller than the sum of its proper divisors (113233886082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82089585918 is a wasteful number, since it uses less digits than its factorization.

82089585918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15129 (or 15114 counting only the distinct ones).

The product of its (nonzero) digits is 16588800, while the sum is 63.

The spelling of 82089585918 in words is "eighty-two billion, eighty-nine million, five hundred eighty-five thousand, nine hundred eighteen".