81022422018 has 16 divisors (see below), whose sum is σ = 162152964000. Its totient is φ = 26989454016.

The previous prime is 81022421989. The next prime is 81022422031.

81022422018 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4495255 + ... + 4513242.

It is an arithmetic number, because the mean of its divisors is an integer number (10134560250).

Almost surely, 2^81022422018 is an apocalyptic number.

81022422018 is an abundant number, since it is smaller than the sum of its proper divisors (81130541982).

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

81022422018 is a wasteful number, since it uses less digits than its factorization.

81022422018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9010001.

The product of its (nonzero) digits is 4096, while the sum is 30.

The spelling of 81022422018 in words is "eighty-one billion, twenty-two million, four hundred twenty-two thousand, eighteen".