43343996009 has 2 divisors, whose sum is σ = 43343996010. Its totient is φ = 43343996008.

The previous prime is 43343995997. The next prime is 43343996023. The reversal of 43343996009 is 90069934334.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22192656784 + 21151339225 = 148972^2 + 145435^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43343996009 is a prime.

It is not a weakly prime, because it can be changed into another prime (43343996039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21671998004 + 21671998005.

It is an arithmetic number, because the mean of its divisors is an integer number (21671998005).

Almost surely, 2^43343996009 is an apocalyptic number.

It is an amenable number.

43343996009 is a deficient number, since it is larger than the sum of its proper divisors (1).

43343996009 is an equidigital number, since it uses as much as digits as its factorization.

43343996009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1889568, while the sum is 50.

The spelling of 43343996009 in words is "forty-three billion, three hundred forty-three million, nine hundred ninety-six thousand, nine".