83842079020717 has 2 divisors, whose sum is σ = 83842079020718. Its totient is φ = 83842079020716.

The previous prime is 83842079020703. The next prime is 83842079020751. The reversal of 83842079020717 is 71702097024838.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63024084990441 + 20817994030276 = 7938771^2 + 4562674^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83842079020717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83842071020717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41921039510358 + 41921039510359.

It is an arithmetic number, because the mean of its divisors is an integer number (41921039510359).

Almost surely, 2^{83842079020717} is an apocalyptic number.

It is an amenable number.

83842079020717 is a deficient number, since it is larger than the sum of its proper divisors (1).

83842079020717 is an equidigital number, since it uses as much as digits as its factorization.

83842079020717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9483264, while the sum is 58.

The spelling of 83842079020717 in words is "eighty-three trillion, eight hundred forty-two billion, seventy-nine million, twenty thousand, seven hundred seventeen".