669317712871 has 2 divisors, whose sum is σ = 669317712872. Its totient is φ = 669317712870.

The previous prime is 669317712859. The next prime is 669317712883. The reversal of 669317712871 is 178217713966.

It is a balanced prime because it is at equal distance from previous prime (669317712859) and next prime (669317712883).

It is a cyclic number.

It is not a de Polignac number, because 669317712871 - 2⁹ = 669317712359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (669317712571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334658856435 + 334658856436.

It is an arithmetic number, because the mean of its divisors is an integer number (334658856436).

Almost surely, 2^669317712871 is an apocalyptic number.

669317712871 is a deficient number, since it is larger than the sum of its proper divisors (1).

669317712871 is an equidigital number, since it uses as much as digits as its factorization.

669317712871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5334336, while the sum is 58.

The spelling of 669317712871 in words is "six hundred sixty-nine billion, three hundred seventeen million, seven hundred twelve thousand, eight hundred seventy-one".