44663665321 has 12 divisors (see below), whose sum is σ = 49189637700. Its totient is φ = 40523505440.

The previous prime is 44663665309. The next prime is 44663665363. The reversal of 44663665321 is 12356636644.

It can be written as a sum of positive squares in 2 ways, for example, as 27312189696 + 17351475625 = 165264^2 + 131725^2 .

It is not a de Polignac number, because 44663665321 - 2¹¹ = 44663663273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44663665421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 301006 + ... + 424183.

It is an arithmetic number, because the mean of its divisors is an integer number (4099136475).

Almost surely, 2^44663665321 is an apocalyptic number.

It is an amenable number.

44663665321 is a deficient number, since it is larger than the sum of its proper divisors (4525972379).

44663665321 is a wasteful number, since it uses less digits than its factorization.

44663665321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725720 (or 725709 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 46.

The spelling of 44663665321 in words is "forty-four billion, six hundred sixty-three million, six hundred sixty-five thousand, three hundred twenty-one".