4544663321 has 6 divisors (see below), whose sum is σ = 4995373866. Its totient is φ = 4131512000.

The previous prime is 4544663317. The next prime is 4544663437. The reversal of 4544663321 is 1233664454.

4544663321 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 3527053321 + 1017610000 = 59389^2 + 31900^2 .

It is not a de Polignac number, because 4544663321 - 2² = 4544663317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4544669321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18779480 + ... + 18779721.

It is an arithmetic number, because the mean of its divisors is an integer number (832562311).

Almost surely, 2^4544663321 is an apocalyptic number.

It is an amenable number.

4544663321 is a deficient number, since it is larger than the sum of its proper divisors (450710545).

4544663321 is a wasteful number, since it uses less digits than its factorization.

4544663321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37559223 (or 37559212 counting only the distinct ones).

The product of its digits is 207360, while the sum is 38.

The square root of 4544663321 is about 67414.1181133448. The cubic root of 4544663321 is about 1656.4076912518.

The spelling of 4544663321 in words is "four billion, five hundred forty-four million, six hundred sixty-three thousand, three hundred twenty-one".