81332244223318 has 16 divisors (see below), whose sum is σ = 133641363960720. Its totient is φ = 36815802739200.

The previous prime is 81332244223253. The next prime is 81332244223337.

81332244223318 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×81332244223318² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7669953603 + ... + 7669964206.

It is an arithmetic number, because the mean of its divisors is an integer number (8352585247545).

Almost surely, 2^{81332244223318} is an apocalyptic number.

81332244223318 is a deficient number, since it is larger than the sum of its proper divisors (52309119737402).

81332244223318 is a wasteful number, since it uses less digits than its factorization.

81332244223318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15339918063.

The product of its digits is 1327104, while the sum is 46.

The spelling of 81332244223318 in words is "eighty-one trillion, three hundred thirty-two billion, two hundred forty-four million, two hundred twenty-three thousand, three hundred eighteen".