22166655265 has 4 divisors (see below), whose sum is σ = 26599986324. Its totient is φ = 17733324208.

The previous prime is 22166655241. The next prime is 22166655271. The reversal of 22166655265 is 56255666122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11785490721 + 10381164544 = 108561^2 + 101888^2 .

It is a cyclic number.

It is not a de Polignac number, because 22166655265 - 2⁵ = 22166655233 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2216665522 + ... + 2216665531.

It is an arithmetic number, because the mean of its divisors is an integer number (6649996581).

Almost surely, 2^22166655265 is an apocalyptic number.

It is an amenable number.

22166655265 is a deficient number, since it is larger than the sum of its proper divisors (4433331059).

22166655265 is an equidigital number, since it uses as much as digits as its factorization.

22166655265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4433331058.

The product of its digits is 1296000, while the sum is 46.

The spelling of 22166655265 in words is "twenty-two billion, one hundred sixty-six million, six hundred fifty-five thousand, two hundred sixty-five".