6444633020 has 96 divisors (see below), whose sum is σ = 16421408640. Its totient is φ = 2073968640.

The previous prime is 6444633017. The next prime is 6444633049. The reversal of 6444633020 is 203364446.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 922340 + ... + 929300.

It is an arithmetic number, because the mean of its divisors is an integer number (171056340).

Almost surely, 2^6444633020 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 6444633020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8210704320).

6444633020 is an abundant number, since it is smaller than the sum of its proper divisors (9976775620).

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

6444633020 is a wasteful number, since it uses less digits than its factorization.

6444633020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7383 (or 7381 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 32.

The square root of 6444633020 is about 80278.4717094191. The cubic root of 6444633020 is about 1860.9415416514.

Adding to 6444633020 its reverse (203364446), we get a palindrome (6647997466).

The spelling of 6444633020 in words is "six billion, four hundred forty-four million, six hundred thirty-three thousand, twenty".