22188420689 has 16 divisors (see below), whose sum is σ = 24524415360. Its totient is φ = 19967650560.

The previous prime is 22188420641. The next prime is 22188420697. The reversal of 22188420689 is 98602488122.

It is a happy number.

It is not a de Polignac number, because 22188420689 - 2⁸ = 22188420433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22188420589) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1187582 + ... + 1206120.

It is an arithmetic number, because the mean of its divisors is an integer number (1532775960).

Almost surely, 2^22188420689 is an apocalyptic number.

It is an amenable number.

22188420689 is a deficient number, since it is larger than the sum of its proper divisors (2335994671).

22188420689 is a wasteful number, since it uses less digits than its factorization.

22188420689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21640.

The product of its (nonzero) digits is 884736, while the sum is 50.

The spelling of 22188420689 in words is "twenty-two billion, one hundred eighty-eight million, four hundred twenty thousand, six hundred eighty-nine".