109742665717 has 2 divisors, whose sum is σ = 109742665718. Its totient is φ = 109742665716.

The previous prime is 109742665661. The next prime is 109742665777. The reversal of 109742665717 is 717566247901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88970361841 + 20772303876 = 298279^2 + 144126^2 .

It is a cyclic number.

It is not a de Polignac number, because 109742665717 - 2³⁵ = 75382927349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109742665777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54871332858 + 54871332859.

It is an arithmetic number, because the mean of its divisors is an integer number (54871332859).

Almost surely, 2^109742665717 is an apocalyptic number.

It is an amenable number.

109742665717 is a deficient number, since it is larger than the sum of its proper divisors (1).

109742665717 is an equidigital number, since it uses as much as digits as its factorization.

109742665717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4445280, while the sum is 55.

The spelling of 109742665717 in words is "one hundred nine billion, seven hundred forty-two million, six hundred sixty-five thousand, seven hundred seventeen".