16820383717 has 2 divisors, whose sum is σ = 16820383718. Its totient is φ = 16820383716.

The previous prime is 16820383709. The next prime is 16820383751. The reversal of 16820383717 is 71738302861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16167376801 + 653006916 = 127151^2 + 25554^2 .

It is a cyclic number.

It is not a de Polignac number, because 16820383717 - 2³ = 16820383709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16820363717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8410191858 + 8410191859.

It is an arithmetic number, because the mean of its divisors is an integer number (8410191859).

Almost surely, 2^16820383717 is an apocalyptic number.

It is an amenable number.

16820383717 is a deficient number, since it is larger than the sum of its proper divisors (1).

16820383717 is an equidigital number, since it uses as much as digits as its factorization.

16820383717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 46.

The spelling of 16820383717 in words is "sixteen billion, eight hundred twenty million, three hundred eighty-three thousand, seven hundred seventeen".