22194569561 has 8 divisors (see below), whose sum is σ = 22241654400. Its totient is φ = 22147535520.

The previous prime is 22194569549. The next prime is 22194569587. The reversal of 22194569561 is 16596549122.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 22194569561 - 2¹⁴ = 22194553177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22194569591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 935516 + ... + 958946.

It is an arithmetic number, because the mean of its divisors is an integer number (2780206800).

Almost surely, 2^22194569561 is an apocalyptic number.

It is an amenable number.

22194569561 is a deficient number, since it is larger than the sum of its proper divisors (47084839).

22194569561 is a wasteful number, since it uses less digits than its factorization.

22194569561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25399.

The product of its digits is 1166400, while the sum is 50.

The spelling of 22194569561 in words is "twenty-two billion, one hundred ninety-four million, five hundred sixty-nine thousand, five hundred sixty-one".