22217688654 has 128 divisors (see below), whose sum is σ = 56020377600. Its totient is φ = 5728112640.

The previous prime is 22217688653. The next prime is 22217688679. The reversal of 22217688654 is 45688671222.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22217688597 and 22217688606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22217688653) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2408002 + ... + 2417210.

It is an arithmetic number, because the mean of its divisors is an integer number (437659200).

Almost surely, 2^22217688654 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22217688654, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28010188800).

22217688654 is an abundant number, since it is smaller than the sum of its proper divisors (33802688946).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22217688654 is a wasteful number, since it uses less digits than its factorization.

22217688654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9378.

The product of its digits is 2580480, while the sum is 51.

The spelling of 22217688654 in words is "twenty-two billion, two hundred seventeen million, six hundred eighty-eight thousand, six hundred fifty-four".