135905830717 has 2 divisors, whose sum is σ = 135905830718. Its totient is φ = 135905830716.

The previous prime is 135905830673. The next prime is 135905830733. The reversal of 135905830717 is 717038509531.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120385405156 + 15520425561 = 346966^2 + 124581^2 .

It is a cyclic number.

It is not a de Polignac number, because 135905830717 - 2¹⁹ = 135905306429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135905830747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67952915358 + 67952915359.

It is an arithmetic number, because the mean of its divisors is an integer number (67952915359).

Almost surely, 2^135905830717 is an apocalyptic number.

It is an amenable number.

135905830717 is a deficient number, since it is larger than the sum of its proper divisors (1).

135905830717 is an equidigital number, since it uses as much as digits as its factorization.

135905830717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 793800, while the sum is 49.

The spelling of 135905830717 in words is "one hundred thirty-five billion, nine hundred five million, eight hundred thirty thousand, seven hundred seventeen".