44504543021 has 2 divisors, whose sum is σ = 44504543022. Its totient is φ = 44504543020.

The previous prime is 44504543009. The next prime is 44504543077. The reversal of 44504543021 is 12034540544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38684989225 + 5819553796 = 196685^2 + 76286^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44504543021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44504543821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22252271510 + 22252271511.

It is an arithmetic number, because the mean of its divisors is an integer number (22252271511).

Almost surely, 2^44504543021 is an apocalyptic number.

It is an amenable number.

44504543021 is a deficient number, since it is larger than the sum of its proper divisors (1).

44504543021 is an equidigital number, since it uses as much as digits as its factorization.

44504543021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38400, while the sum is 32.

The spelling of 44504543021 in words is "forty-four billion, five hundred four million, five hundred forty-three thousand, twenty-one".