20404440044 has 12 divisors (see below), whose sum is σ = 36075892104. Its totient is φ = 10097042304.

The previous prime is 20404439981. The next prime is 20404440047. The reversal of 20404440044 is 44004440402.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20404439995 and 20404440022.

It is not an unprimeable number, because it can be changed into a prime (20404440047) 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, 26293994 + ... + 26294769.

It is an arithmetic number, because the mean of its divisors is an integer number (3006324342).

Almost surely, 2^20404440044 is an apocalyptic number.

It is an amenable number.

20404440044 is a deficient number, since it is larger than the sum of its proper divisors (15671452060).

20404440044 is a wasteful number, since it uses less digits than its factorization.

20404440044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52588864 (or 52588862 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 20404440044 its reverse (44004440402), we get a palindrome (64408880446).

The spelling of 20404440044 in words is "twenty billion, four hundred four million, four hundred forty thousand, forty-four".