22566620666 has 8 divisors (see below), whose sum is σ = 33852014100. Its totient is φ = 11282615968.

The previous prime is 22566620639. The next prime is 22566620677. The reversal of 22566620666 is 66602666522.

It can be written as a sum of positive squares in 2 ways, for example, as 22105445041 + 461175625 = 148679^2 + 21475^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 22566620666.

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 3 ways as a sum of consecutive naturals, for example, 305561 + ... + 372156.

Almost surely, 2^22566620666 is an apocalyptic number.

22566620666 is a deficient number, since it is larger than the sum of its proper divisors (11285393434).

22566620666 is a wasteful number, since it uses less digits than its factorization.

22566620666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694368.

The product of its (nonzero) digits is 1866240, while the sum is 47.

The spelling of 22566620666 in words is "twenty-two billion, five hundred sixty-six million, six hundred twenty thousand, six hundred sixty-six".