44066722169 has 2 divisors, whose sum is σ = 44066722170. Its totient is φ = 44066722168.

The previous prime is 44066722099. The next prime is 44066722213. The reversal of 44066722169 is 96122766044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37524338944 + 6542383225 = 193712^2 + 80885^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44066722169 is a prime.

It is a super-2 number, since 2×44066722169² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (44066722369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22033361084 + 22033361085.

It is an arithmetic number, because the mean of its divisors is an integer number (22033361085).

Almost surely, 2^44066722169 is an apocalyptic number.

It is an amenable number.

44066722169 is a deficient number, since it is larger than the sum of its proper divisors (1).

44066722169 is an equidigital number, since it uses as much as digits as its factorization.

44066722169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 47.

The spelling of 44066722169 in words is "forty-four billion, sixty-six million, seven hundred twenty-two thousand, one hundred sixty-nine".