43314681209 has 2 divisors, whose sum is σ = 43314681210. Its totient is φ = 43314681208.

The previous prime is 43314681203. The next prime is 43314681227. The reversal of 43314681209 is 90218641334.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25016167225 + 18298513984 = 158165^2 + 135272^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43314681209 is a prime.

It is not a weakly prime, because it can be changed into another prime (43314681203) 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 as a sum of consecutive naturals, namely, 21657340604 + 21657340605.

It is an arithmetic number, because the mean of its divisors is an integer number (21657340605).

Almost surely, 2^43314681209 is an apocalyptic number.

It is an amenable number.

43314681209 is a deficient number, since it is larger than the sum of its proper divisors (1).

43314681209 is an equidigital number, since it uses as much as digits as its factorization.

43314681209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 43314681209 in words is "forty-three billion, three hundred fourteen million, six hundred eighty-one thousand, two hundred nine".