44081221673 has 2 divisors, whose sum is σ = 44081221674. Its totient is φ = 44081221672.

The previous prime is 44081221607. The next prime is 44081221703. The reversal of 44081221673 is 37612218044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25520701504 + 18560520169 = 159752^2 + 136237^2 .

It is a cyclic number.

It is not a de Polignac number, because 44081221673 - 2²² = 44077027369 is a prime.

It is not a weakly prime, because it can be changed into another prime (44081221603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22040610836 + 22040610837.

It is an arithmetic number, because the mean of its divisors is an integer number (22040610837).

Almost surely, 2^44081221673 is an apocalyptic number.

It is an amenable number.

44081221673 is a deficient number, since it is larger than the sum of its proper divisors (1).

44081221673 is an equidigital number, since it uses as much as digits as its factorization.

44081221673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64512, while the sum is 38.

The spelling of 44081221673 in words is "forty-four billion, eighty-one million, two hundred twenty-one thousand, six hundred seventy-three".