83368493909 has 2 divisors, whose sum is σ = 83368493910. Its totient is φ = 83368493908.

The previous prime is 83368493891. The next prime is 83368493951. The reversal of 83368493909 is 90939486338.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70584799684 + 12783694225 = 265678^2 + 113065^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83368493909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83368493209) 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, 41684246954 + 41684246955.

It is an arithmetic number, because the mean of its divisors is an integer number (41684246955).

Almost surely, 2^83368493909 is an apocalyptic number.

It is an amenable number.

83368493909 is a deficient number, since it is larger than the sum of its proper divisors (1).

83368493909 is an equidigital number, since it uses as much as digits as its factorization.

83368493909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30233088, while the sum is 62.

The spelling of 83368493909 in words is "eighty-three billion, three hundred sixty-eight million, four hundred ninety-three thousand, nine hundred nine".