20442440242444 has 24 divisors (see below), whose sum is σ = 39056336520768. Its totient is φ = 9284908841040.

The previous prime is 20442440242423. The next prime is 20442440242489. The reversal of 20442440242444 is 44424204424402.

It is a junction number, because it is equal to n+sod(n) for n = 20442440242397 and 20442440242406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177678114 + ... + 177793129.

It is an arithmetic number, because the mean of its divisors is an integer number (1627347355032).

Almost surely, 2^{20442440242444} is an apocalyptic number.

It is an amenable number.

20442440242444 is a deficient number, since it is larger than the sum of its proper divisors (18613896278324).

20442440242444 is a wasteful number, since it uses less digits than its factorization.

20442440242444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355472565 (or 355472563 counting only the distinct ones).

The product of its (nonzero) digits is 1048576, while the sum is 40.

Adding to 20442440242444 its reverse (44424204424402), we get a palindrome (64866644666846).

The spelling of 20442440242444 in words is "twenty trillion, four hundred forty-two billion, four hundred forty million, two hundred forty-two thousand, four hundred forty-four".