22523065666 has 4 divisors (see below), whose sum is σ = 33784598502. Its totient is φ = 11261532832.

The previous prime is 22523065651. The next prime is 22523065693. The reversal of 22523065666 is 66656032522.

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

It can be written as a sum of positive squares in only one way, i.e., 20412122641 + 2110943025 = 142871^2 + 45945^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5630766415 + ... + 5630766418.

Almost surely, 2^22523065666 is an apocalyptic number.

22523065666 is a deficient number, since it is larger than the sum of its proper divisors (11261532836).

22523065666 is a wasteful number, since it uses less digits than its factorization.

22523065666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11261532835.

The product of its (nonzero) digits is 777600, while the sum is 43.

The spelling of 22523065666 in words is "twenty-two billion, five hundred twenty-three million, sixty-five thousand, six hundred sixty-six".