20042440444 has 48 divisors (see below), whose sum is σ = 39096237600. Its totient is φ = 8926477056.

The previous prime is 20042440399. The next prime is 20042440469. The reversal of 20042440444 is 44404424002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5301747 + ... + 5305525.

It is an arithmetic number, because the mean of its divisors is an integer number (814504950).

Almost surely, 2^20042440444 is an apocalyptic number.

It is an amenable number.

20042440444 is a deficient number, since it is larger than the sum of its proper divisors (19053797156).

20042440444 is a wasteful number, since it uses less digits than its factorization.

20042440444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7342 (or 7340 counting only the distinct ones).

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

Adding to 20042440444 its reverse (44404424002), we get a palindrome (64446864446).

The spelling of 20042440444 in words is "twenty billion, forty-two million, four hundred forty thousand, four hundred forty-four".