40347324509 has 2 divisors, whose sum is σ = 40347324510. Its totient is φ = 40347324508.

The previous prime is 40347324487. The next prime is 40347324557. The reversal of 40347324509 is 90542374304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29609805625 + 10737518884 = 172075^2 + 103622^2 .

It is a cyclic number.

It is not a de Polignac number, because 40347324509 - 2³² = 36052357213 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40347324559) 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, 20173662254 + 20173662255.

It is an arithmetic number, because the mean of its divisors is an integer number (20173662255).

Almost surely, 2^40347324509 is an apocalyptic number.

It is an amenable number.

40347324509 is a deficient number, since it is larger than the sum of its proper divisors (1).

40347324509 is an equidigital number, since it uses as much as digits as its factorization.

40347324509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 41.

The spelling of 40347324509 in words is "forty billion, three hundred forty-seven million, three hundred twenty-four thousand, five hundred nine".