22066365646661 has 24 divisors (see below), whose sum is σ = 25906371654240. Its totient is φ = 18739174601952.

The previous prime is 22066365646643. The next prime is 22066365646673. The reversal of 22066365646661 is 16664656366022.

It is a de Polignac number, because none of the positive numbers 2^k-22066365646661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22066365646661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22066365546661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79137290 + ... + 79415636.

It is an arithmetic number, because the mean of its divisors is an integer number (1079432152260).

Almost surely, 2^{22066365646661} is an apocalyptic number.

It is an amenable number.

22066365646661 is a deficient number, since it is larger than the sum of its proper divisors (3840006007579).

22066365646661 is a wasteful number, since it uses less digits than its factorization.

22066365646661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293313 (or 293306 counting only the distinct ones).

The product of its (nonzero) digits is 67184640, while the sum is 59.

The spelling of 22066365646661 in words is "twenty-two trillion, sixty-six billion, three hundred sixty-five million, six hundred forty-six thousand, six hundred sixty-one".