20444443411 has 6 divisors (see below), whose sum is σ = 23782311780. Its totient is φ = 17523808596.

The previous prime is 20444443391. The next prime is 20444443433. The reversal of 20444443411 is 11434444402.

It is a de Polignac number, because none of the positive numbers 2^k-20444443411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20444423411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 208616721 + ... + 208616818.

It is an arithmetic number, because the mean of its divisors is an integer number (3963718630).

Almost surely, 2^20444443411 is an apocalyptic number.

20444443411 is a deficient number, since it is larger than the sum of its proper divisors (3337868369).

20444443411 is an equidigital number, since it uses as much as digits as its factorization.

20444443411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417233553 (or 417233546 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 20444443411 its reverse (11434444402), we get a palindrome (31878887813).

Subtracting from 20444443411 its reverse (11434444402), we obtain a palindrome (9009999009).

The spelling of 20444443411 in words is "twenty billion, four hundred forty-four million, four hundred forty-three thousand, four hundred eleven".