20444403440011 has 4 divisors (see below), whose sum is σ = 20444834431224. Its totient is φ = 20443972448800.

The previous prime is 20444403439997. The next prime is 20444403440057. The reversal of 20444403440011 is 11004430444402.

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 20444403440011 - 2⁵ = 20444403439979 is a prime.

It is a super-4 number, since 4×20444403440011⁴ (a number of 54 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20444403440311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215424445 + ... + 215519326.

It is an arithmetic number, because the mean of its divisors is an integer number (5111208607806).

Almost surely, 2^{20444403440011} is an apocalyptic number.

20444403440011 is a deficient number, since it is larger than the sum of its proper divisors (430991213).

20444403440011 is an equidigital number, since it uses as much as digits as its factorization.

20444403440011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430991212.

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

Adding to 20444403440011 its reverse (11004430444402), we get a palindrome (31448833884413).

The spelling of 20444403440011 in words is "twenty trillion, four hundred forty-four billion, four hundred three million, four hundred forty thousand, eleven".