20440442110544 has 10 divisors (see below), whose sum is σ = 39603356589210. Its totient is φ = 10220221055264.

The previous prime is 20440442110537. The next prime is 20440442110639. The reversal of 20440442110544 is 44501124404402.

It can be written as a sum of positive squares in only one way, i.e., 18953066734144 + 1487375376400 = 4353512^2 + 1219580^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 638763815939 + ... + 638763815970.

It is an arithmetic number, because the mean of its divisors is an integer number (3960335658921).

Almost surely, 2^{20440442110544} is an apocalyptic number.

It is an amenable number.

20440442110544 is a deficient number, since it is larger than the sum of its proper divisors (19162914478666).

20440442110544 is a wasteful number, since it uses less digits than its factorization.

20440442110544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277527631917 (or 1277527631911 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 35.

Adding to 20440442110544 its reverse (44501124404402), we get a palindrome (64941566514946).

The spelling of 20440442110544 in words is "twenty trillion, four hundred forty billion, four hundred forty-two million, one hundred ten thousand, five hundred forty-four".