20444443211 has 8 divisors (see below), whose sum is σ = 20468616960. Its totient is φ = 20420287272.

The previous prime is 20444443207. The next prime is 20444443223. The reversal of 20444443211 is 11234444402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20444443211 - 2² = 20444443207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20444413211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4382066 + ... + 4386728.

It is an arithmetic number, because the mean of its divisors is an integer number (2558577120).

Almost surely, 2^20444443211 is an apocalyptic number.

20444443211 is a deficient number, since it is larger than the sum of its proper divisors (24173749).

20444443211 is a wasteful number, since it uses less digits than its factorization.

20444443211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8905.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 20444443211 its reverse (11234444402), we get a palindrome (31678887613).

The spelling of 20444443211 in words is "twenty billion, four hundred forty-four million, four hundred forty-three thousand, two hundred eleven".