20444311011 has 16 divisors (see below), whose sum is σ = 28701875840. Its totient is φ = 12908548800.

The previous prime is 20444310977. The next prime is 20444311051. The reversal of 20444311011 is 11011344402.

It is not a de Polignac number, because 20444311011 - 2⁶ = 20444310947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20444311051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160536 + ... + 258186.

It is an arithmetic number, because the mean of its divisors is an integer number (1793867240).

Almost surely, 2^20444311011 is an apocalyptic number.

20444311011 is a deficient number, since it is larger than the sum of its proper divisors (8257564829).

20444311011 is a wasteful number, since it uses less digits than its factorization.

20444311011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101346.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 20444311011 its reverse (11011344402), we get a palindrome (31455655413).

The spelling of 20444311011 in words is "twenty billion, four hundred forty-four million, three hundred eleven thousand, eleven".