22081317666 has 16 divisors (see below), whose sum is σ = 46486984800. Its totient is φ = 6973047648.

The previous prime is 22081317659. The next prime is 22081317673. The reversal of 22081317666 is 66671318022.

It is an interprime number because it is at equal distance from previous prime (22081317659) and next prime (22081317673).

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, 96847771 + ... + 96847998.

It is an arithmetic number, because the mean of its divisors is an integer number (2905436550).

Almost surely, 2^22081317666 is an apocalyptic number.

22081317666 is an abundant number, since it is smaller than the sum of its proper divisors (24405667134).

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

22081317666 is a wasteful number, since it uses less digits than its factorization.

22081317666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193695793.

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 22081317666 in words is "twenty-two billion, eighty-one million, three hundred seventeen thousand, six hundred sixty-six".