20445224444 has 12 divisors (see below), whose sum is σ = 35780719464. Its totient is φ = 10222161744.

The previous prime is 20445224407. The next prime is 20445224453. The reversal of 20445224444 is 44442254402.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2594 + ... + 202230.

It is an arithmetic number, because the mean of its divisors is an integer number (2981726622).

Almost surely, 2^20445224444 is an apocalyptic number.

It is an amenable number.

20445224444 is a deficient number, since it is larger than the sum of its proper divisors (15335495020).

20445224444 is a wasteful number, since it uses less digits than its factorization.

20445224444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225244 (or 225242 counting only the distinct ones).

The product of its (nonzero) digits is 163840, while the sum is 35.

Adding to 20445224444 its reverse (44442254402), we get a palindrome (64887478846).

The spelling of 20445224444 in words is "twenty billion, four hundred forty-five million, two hundred twenty-four thousand, four hundred forty-four".