22206245791 has 4 divisors (see below), whose sum is σ = 22747861584. Its totient is φ = 21664630000.

The previous prime is 22206245771. The next prime is 22206245813. The reversal of 22206245791 is 19754260222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19754260222 = 2 ⋅9877130111.

It is a cyclic number.

It is not a de Polignac number, because 22206245791 - 2⁵ = 22206245759 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22206245741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270807835 + ... + 270807916.

It is an arithmetic number, because the mean of its divisors is an integer number (5686965396).

Almost surely, 2^22206245791 is an apocalyptic number.

22206245791 is a deficient number, since it is larger than the sum of its proper divisors (541615793).

22206245791 is an equidigital number, since it uses as much as digits as its factorization.

22206245791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541615792.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 22206245791 in words is "twenty-two billion, two hundred six million, two hundred forty-five thousand, seven hundred ninety-one".