20443228808 has 12 divisors (see below), whose sum is σ = 38331812295. Its totient is φ = 10221412200.

The previous prime is 20443228801. The next prime is 20443228811. The reversal of 20443228808 is 80882234402.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 10221614404 + 10221614404 = 101102^2 + 101102^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=101102.

It is a super-2 number, since 2×20443228808² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20443228801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 379133 + ... + 429683.

Almost surely, 2^20443228808 is an apocalyptic number.

It is an amenable number.

20443228808 is a deficient number, since it is larger than the sum of its proper divisors (17888583487).

20443228808 is an frugal number, since it uses more digits than its factorization.

20443228808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101108 (or 50553 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 41.

The spelling of 20443228808 in words is "twenty billion, four hundred forty-three million, two hundred twenty-eight thousand, eight hundred eight".