20444133332 has 48 divisors (see below), whose sum is σ = 42252887040. Its totient is φ = 8478787680.

The previous prime is 20444133331. The next prime is 20444133337. The reversal of 20444133332 is 23333144402.

It is a junction number, because it is equal to n+sod(n) for n = 20444133295 and 20444133304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20444133331) 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, 821894 + ... + 846402.

It is an arithmetic number, because the mean of its divisors is an integer number (880268480).

Almost surely, 2^20444133332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20444133332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21126443520).

20444133332 is an abundant number, since it is smaller than the sum of its proper divisors (21808753708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20444133332 is an equidigital number, since it uses as much as digits as its factorization.

20444133332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24613 (or 24549 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 29.

Adding to 20444133332 its reverse (23333144402), we get a palindrome (43777277734).

The spelling of 20444133332 in words is "twenty billion, four hundred forty-four million, one hundred thirty-three thousand, three hundred thirty-two".