22472805181 has 8 divisors (see below), whose sum is σ = 23339509560. Its totient is φ = 21619749888.

The previous prime is 22472805167. The next prime is 22472805209. The reversal of 22472805181 is 18150827422.

It can be written as a sum of positive squares in 4 ways, for example, as 5667831225 + 16804973956 = 75285^2 + 129634^2 .

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 22472805181 - 2⁵ = 22472805149 is a prime.

It is a super-2 number, since 2×22472805181² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22472805151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3408916 + ... + 3415501.

It is an arithmetic number, because the mean of its divisors is an integer number (2917438695).

Almost surely, 2^22472805181 is an apocalyptic number.

It is an amenable number.

22472805181 is a deficient number, since it is larger than the sum of its proper divisors (866704379).

22472805181 is an equidigital number, since it uses as much as digits as its factorization.

22472805181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6824543.

The product of its (nonzero) digits is 71680, while the sum is 40.

The spelling of 22472805181 in words is "twenty-two billion, four hundred seventy-two million, eight hundred five thousand, one hundred eighty-one".