20044404011 has 4 divisors (see below), whose sum is σ = 20160267792. Its totient is φ = 19928540232.

The previous prime is 20044404001. The next prime is 20044404071. The reversal of 20044404011 is 11040444002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20044404011 - 2²⁶ = 19977295147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20044404001) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 57931631 + ... + 57931976.

It is an arithmetic number, because the mean of its divisors is an integer number (5040066948).

Almost surely, 2^20044404011 is an apocalyptic number.

20044404011 is a deficient number, since it is larger than the sum of its proper divisors (115863781).

20044404011 is a wasteful number, since it uses less digits than its factorization.

20044404011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115863780.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 20044404011 its reverse (11040444002), we get a palindrome (31084848013).

The spelling of 20044404011 in words is "twenty billion, forty-four million, four hundred four thousand, eleven".