679209469808503 has 2 divisors, whose sum is σ = 679209469808504. Its totient is φ = 679209469808502.

The previous prime is 679209469808491. The next prime is 679209469808521. The reversal of 679209469808503 is 305808964902976.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-679209469808503 is a prime.

It is a super-2 number, since 2×679209469808503² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 679209469808503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (679209469808533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339604734904251 + 339604734904252.

It is an arithmetic number, because the mean of its divisors is an integer number (339604734904252).

Almost surely, 2^{679209469808503} is an apocalyptic number.

679209469808503 is a deficient number, since it is larger than the sum of its proper divisors (1).

679209469808503 is an equidigital number, since it uses as much as digits as its factorization.

679209469808503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1410877440, while the sum is 76.

The spelling of 679209469808503 in words is "six hundred seventy-nine trillion, two hundred nine billion, four hundred sixty-nine million, eight hundred eight thousand, five hundred three".