83717000561 has 2 divisors, whose sum is σ = 83717000562. Its totient is φ = 83717000560.

The previous prime is 83717000483. The next prime is 83717000573. The reversal of 83717000561 is 16500071738.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70998799936 + 12718200625 = 266456^2 + 112775^2 .

It is a cyclic number.

It is not a de Polignac number, because 83717000561 - 2²⁶ = 83649891697 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (83717000581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41858500280 + 41858500281.

It is an arithmetic number, because the mean of its divisors is an integer number (41858500281).

Almost surely, 2^83717000561 is an apocalyptic number.

It is an amenable number.

83717000561 is a deficient number, since it is larger than the sum of its proper divisors (1).

83717000561 is an equidigital number, since it uses as much as digits as its factorization.

83717000561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 38.

The spelling of 83717000561 in words is "eighty-three billion, seven hundred seventeen million, five hundred sixty-one", and thus it is an aban number.