82218404818 has 64 divisors (see below), whose sum is σ = 146382888960. Its totient is φ = 34210310400.

The previous prime is 82218404791. The next prime is 82218404831. The reversal of 82218404818 is 81840481228.

It is a super-2 number, since 2×82218404818² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3832903 + ... + 3854293.

It is an arithmetic number, because the mean of its divisors is an integer number (2287232640).

Almost surely, 2^82218404818 is an apocalyptic number.

82218404818 is a deficient number, since it is larger than the sum of its proper divisors (64164484142).

82218404818 is a wasteful number, since it uses less digits than its factorization.

82218404818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21703.

The product of its (nonzero) digits is 262144, while the sum is 46.

The spelling of 82218404818 in words is "eighty-two billion, two hundred eighteen million, four hundred four thousand, eight hundred eighteen".