668880341039 has 2 divisors, whose sum is σ = 668880341040. Its totient is φ = 668880341038.

The previous prime is 668880341033. The next prime is 668880341071. The reversal of 668880341039 is 930143088866.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-668880341039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (668880341033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334440170519 + 334440170520.

It is an arithmetic number, because the mean of its divisors is an integer number (334440170520).

Almost surely, 2^668880341039 is an apocalyptic number.

668880341039 is a deficient number, since it is larger than the sum of its proper divisors (1).

668880341039 is an equidigital number, since it uses as much as digits as its factorization.

668880341039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5971968, while the sum is 56.

The spelling of 668880341039 in words is "six hundred sixty-eight billion, eight hundred eighty million, three hundred forty-one thousand, thirty-nine".