82638198882 has 18 divisors (see below), whose sum is σ = 179052073473. Its totient is φ = 27545659752.

The previous prime is 82638198859. The next prime is 82638198893. The reversal of 82638198882 is 28889183628.

It can be written as a sum of positive squares in 2 ways, for example, as 57417265161 + 25220933721 = 239619^2 + 158811^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=203271.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1185748 + ... + 1253504.

Almost surely, 2^82638198882 is an apocalyptic number.

82638198882 is an abundant number, since it is smaller than the sum of its proper divisors (96413874591).

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

82638198882 is an frugal number, since it uses more digits than its factorization.

82638198882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135522 (or 67762 counting only the distinct ones).

The product of its digits is 21233664, while the sum is 63.

The spelling of 82638198882 in words is "eighty-two billion, six hundred thirty-eight million, one hundred ninety-eight thousand, eight hundred eighty-two".