82518717222 has 128 divisors (see below), whose sum is σ = 193958323200. Its totient is φ = 25952838912.

The previous prime is 82518717217. The next prime is 82518717257. The reversal of 82518717222 is 22271781528.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 75496908 + ... + 75498000.

It is an arithmetic number, because the mean of its divisors is an integer number (1515299400).

Almost surely, 2^82518717222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82518717222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96979161600).

82518717222 is an abundant number, since it is smaller than the sum of its proper divisors (111439605978).

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

82518717222 is a wasteful number, since it uses less digits than its factorization.

82518717222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1899 (or 1893 counting only the distinct ones).

The product of its digits is 250880, while the sum is 45.

The spelling of 82518717222 in words is "eighty-two billion, five hundred eighteen million, seven hundred seventeen thousand, two hundred twenty-two".