44066722009 has 2 divisors, whose sum is σ = 44066722010. Its totient is φ = 44066722008.

The previous prime is 44066721997. The next prime is 44066722013. The reversal of 44066722009 is 90022766044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30138001609 + 13928720400 = 173603^2 + 118020^2 .

It is a cyclic number.

It is not a de Polignac number, because 44066722009 - 2¹⁵ = 44066689241 is a prime.

It is not a weakly prime, because it can be changed into another prime (44066722099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22033361004 + 22033361005.

It is an arithmetic number, because the mean of its divisors is an integer number (22033361005).

Almost surely, 2^44066722009 is an apocalyptic number.

It is an amenable number.

44066722009 is a deficient number, since it is larger than the sum of its proper divisors (1).

44066722009 is an equidigital number, since it uses as much as digits as its factorization.

44066722009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 44066722009 in words is "forty-four billion, sixty-six million, seven hundred twenty-two thousand, nine".