20544204444 has 12 divisors (see below), whose sum is σ = 47936477064. Its totient is φ = 6848068144.

The previous prime is 20544204427. The next prime is 20544204449. The reversal of 20544204444 is 44440244502.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20544204449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 856008507 + ... + 856008530.

It is an arithmetic number, because the mean of its divisors is an integer number (3994706422).

Almost surely, 2^20544204444 is an apocalyptic number.

It is an amenable number.

20544204444 is an abundant number, since it is smaller than the sum of its proper divisors (27392272620).

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

20544204444 is a wasteful number, since it uses less digits than its factorization.

20544204444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1712017044 (or 1712017042 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 33.

Adding to 20544204444 its reverse (44440244502), we get a palindrome (64984448946).

The spelling of 20544204444 in words is "twenty billion, five hundred forty-four million, two hundred four thousand, four hundred forty-four".