20404026404444 has 12 divisors (see below), whose sum is σ = 35728595432544. Its totient is φ = 10195856280864.

The previous prime is 20404026404401. The next prime is 20404026404449. The reversal of 20404026404444 is 44440462040402.

It is a junction number, because it is equal to n+sod(n) for n = 20404026404398 and 20404026404407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20404026404449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1539222884 + ... + 1539236139.

It is an arithmetic number, because the mean of its divisors is an integer number (2977382952712).

Almost surely, 2^{20404026404444} is an apocalyptic number.

It is an amenable number.

20404026404444 is a deficient number, since it is larger than the sum of its proper divisors (15324569028100).

20404026404444 is a wasteful number, since it uses less digits than its factorization.

20404026404444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3078460684 (or 3078460682 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 38.

Adding to 20404026404444 its reverse (44440462040402), we get a palindrome (64844488444846).

The spelling of 20404026404444 in words is "twenty trillion, four hundred four billion, twenty-six million, four hundred four thousand, four hundred forty-four".