7766421700717 has 2 divisors, whose sum is σ = 7766421700718. Its totient is φ = 7766421700716.

The previous prime is 7766421700693. The next prime is 7766421700783. The reversal of 7766421700717 is 7170071246677.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7372848659401 + 393573041316 = 2715299^2 + 627354^2 .

It is a cyclic number.

It is not a de Polignac number, because 7766421700717 - 2²³ = 7766413312109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7766421703717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3883210850358 + 3883210850359.

It is an arithmetic number, because the mean of its divisors is an integer number (3883210850359).

Almost surely, 2^{7766421700717} is an apocalyptic number.

It is an amenable number.

7766421700717 is a deficient number, since it is larger than the sum of its proper divisors (1).

7766421700717 is an equidigital number, since it uses as much as digits as its factorization.

7766421700717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4840416, while the sum is 55.

The spelling of 7766421700717 in words is "seven trillion, seven hundred sixty-six billion, four hundred twenty-one million, seven hundred thousand, seven hundred seventeen".