20111044404005 has 4 divisors (see below), whose sum is σ = 24133253284812. Its totient is φ = 16088835523200.

The previous prime is 20111044403999. The next prime is 20111044404019. The reversal of 20111044404005 is 50040444011102.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11377169476036 + 8733874927969 = 3373006^2 + 2955313^2 .

It is not a de Polignac number, because 20111044404005 - 2¹⁸ = 20111044141861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2011104440396 + ... + 2011104440405.

It is an arithmetic number, because the mean of its divisors is an integer number (6033313321203).

Almost surely, 2^{20111044404005} is an apocalyptic number.

It is an amenable number.

20111044404005 is a deficient number, since it is larger than the sum of its proper divisors (4022208880807).

20111044404005 is an equidigital number, since it uses as much as digits as its factorization.

20111044404005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4022208880806.

The product of its (nonzero) digits is 2560, while the sum is 26.

Adding to 20111044404005 its reverse (50040444011102), we get a palindrome (70151488415107).

The spelling of 20111044404005 in words is "twenty trillion, one hundred eleven billion, forty-four million, four hundred four thousand, five".