82271066840 has 128 divisors (see below), whose sum is σ = 200031768000. Its totient is φ = 30337302528.

The previous prime is 82271066837. The next prime is 82271066897. The reversal of 82271066840 is 4866017228.

It is a junction number, because it is equal to n+sod(n) for n = 82271066791 and 82271066800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26632016 + ... + 26635104.

Almost surely, 2^82271066840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82271066840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100015884000).

82271066840 is an abundant number, since it is smaller than the sum of its proper divisors (117760701160).

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

82271066840 is a wasteful number, since it uses less digits than its factorization.

82271066840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3909 (or 3905 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 44.

The spelling of 82271066840 in words is "eighty-two billion, two hundred seventy-one million, sixty-six thousand, eight hundred forty".