6660321044 has 12 divisors (see below), whose sum is σ = 12552143604. Its totient is φ = 3073994304.

The previous prime is 6660321043. The next prime is 6660321089. The reversal of 6660321044 is 4401230666.

It can be written as a sum of positive squares in 2 ways, for example, as 2941760644 + 3718560400 = 54238^2 + 60980^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6660321044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6660321043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64041497 + ... + 64041600.

It is an arithmetic number, because the mean of its divisors is an integer number (1046011967).

Almost surely, 2^6660321044 is an apocalyptic number.

It is an amenable number.

6660321044 is a deficient number, since it is larger than the sum of its proper divisors (5891822560).

6660321044 is a wasteful number, since it uses less digits than its factorization.

6660321044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128083114 (or 128083112 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 6660321044 is about 81610.7899974017. The cubic root of 6660321044 is about 1881.4747222432.

The spelling of 6660321044 in words is "six billion, six hundred sixty million, three hundred twenty-one thousand, forty-four".