766342805717 has 2 divisors, whose sum is σ = 766342805718. Its totient is φ = 766342805716.

The previous prime is 766342805699. The next prime is 766342805719. The reversal of 766342805717 is 717508243667.

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., 679356741361 + 86986064356 = 824231^2 + 294934^2 .

It is a cyclic number.

It is not a de Polignac number, because 766342805717 - 2¹⁶ = 766342740181 is a prime.

Together with 766342805719, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (766342805719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383171402858 + 383171402859.

It is an arithmetic number, because the mean of its divisors is an integer number (383171402859).

Almost surely, 2^766342805717 is an apocalyptic number.

It is an amenable number.

766342805717 is a deficient number, since it is larger than the sum of its proper divisors (1).

766342805717 is an equidigital number, since it uses as much as digits as its factorization.

766342805717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11854080, while the sum is 56.

The spelling of 766342805717 in words is "seven hundred sixty-six billion, three hundred forty-two million, eight hundred five thousand, seven hundred seventeen".