82439908860 has 48 divisors (see below), whose sum is σ = 233993835936. Its totient is φ = 21682824192.

The previous prime is 82439908847. The next prime is 82439908909. The reversal of 82439908860 is 6880993428.

It is a self number, because there is not a number n which added to its sum of digits gives 82439908860.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9406569 + ... + 9415328.

It is an arithmetic number, because the mean of its divisors is an integer number (4874871582).

Almost surely, 2^82439908860 is an apocalyptic number.

It is an amenable number.

82439908860 is an abundant number, since it is smaller than the sum of its proper divisors (151553927076).

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

82439908860 is a wasteful number, since it uses less digits than its factorization.

82439908860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18821982 (or 18821980 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 57.

The spelling of 82439908860 in words is "eighty-two billion, four hundred thirty-nine million, nine hundred eight thousand, eight hundred sixty".