20440024220404 has 12 divisors (see below), whose sum is σ = 35865940625284. Its totient is φ = 10192612613184.

The previous prime is 20440024220393. The next prime is 20440024220479. The reversal of 20440024220404 is 40402242004402.

It can be written as a sum of positive squares in 2 ways, for example, as 12671250508900 + 7768773711504 = 3559670^2 + 2787252^2 .

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 in 3 ways as a sum of consecutive naturals, for example, 6849872577 + ... + 6849875560.

Almost surely, 2^{20440024220404} is an apocalyptic number.

It is an amenable number.

20440024220404 is a deficient number, since it is larger than the sum of its proper divisors (15425916404880).

20440024220404 is a wasteful number, since it uses less digits than its factorization.

20440024220404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13699748514 (or 13699748512 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 20440024220404 its reverse (40402242004402), we get a palindrome (60842266224806).

The spelling of 20440024220404 in words is "twenty trillion, four hundred forty billion, twenty-four million, two hundred twenty thousand, four hundred four".