680165332079 has 2 divisors, whose sum is σ = 680165332080. Its totient is φ = 680165332078.

The previous prime is 680165332037. The next prime is 680165332139. The reversal of 680165332079 is 970233561086.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-680165332079 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680165332009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340082666039 + 340082666040.

It is an arithmetic number, because the mean of its divisors is an integer number (340082666040).

Almost surely, 2^680165332079 is an apocalyptic number.

680165332079 is a deficient number, since it is larger than the sum of its proper divisors (1).

680165332079 is an equidigital number, since it uses as much as digits as its factorization.

680165332079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1632960, while the sum is 50.

The spelling of 680165332079 in words is "six hundred eighty billion, one hundred sixty-five million, three hundred thirty-two thousand, seventy-nine".