22268518722 has 54 divisors (see below), whose sum is σ = 51278335563. Its totient is φ = 6982825344.

The previous prime is 22268518721. The next prime is 22268518729. The reversal of 22268518722 is 22781586222.

22268518722 is a `hidden beast` number, since 2 + 2 + 2 + 68 + 518 + 72 + 2 = 666.

22268518722 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 9295080921 + 12973437801 = 96411^2 + 113901^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=105519.

It is not an unprimeable number, because it can be changed into a prime (22268518721) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 10761904 + ... + 10763972.

Almost surely, 2^22268518722 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22268518722

22268518722 is an abundant number, since it is smaller than the sum of its proper divisors (29009816841).

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

22268518722 is an equidigital number, since it uses as much as digits as its factorization.

22268518722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4180 (or 2091 counting only the distinct ones).

The product of its digits is 430080, while the sum is 45.

The spelling of 22268518722 in words is "twenty-two billion, two hundred sixty-eight million, five hundred eighteen thousand, seven hundred twenty-two".