82217771532 has 72 divisors (see below), whose sum is σ = 224207743760. Its totient is φ = 25253389440.

The previous prime is 82217771513. The next prime is 82217771533. The reversal of 82217771532 is 23517771228.

It is not an unprimeable number, because it can be changed into a prime (82217771533) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113394 + ... + 421062.

Almost surely, 2^82217771532 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 82217771532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112103871880).

82217771532 is an abundant number, since it is smaller than the sum of its proper divisors (141989972228).

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

82217771532 is a wasteful number, since it uses less digits than its factorization.

82217771532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308263 (or 308258 counting only the distinct ones).

The product of its digits is 329280, while the sum is 45.

The spelling of 82217771532 in words is "eighty-two billion, two hundred seventeen million, seven hundred seventy-one thousand, five hundred thirty-two".