666673667159 has 2 divisors, whose sum is σ = 666673667160. Its totient is φ = 666673667158.

The previous prime is 666673667087. The next prime is 666673667189. The reversal of 666673667159 is 951766376666.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-666673667159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (666673667189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333336833579 + 333336833580.

It is an arithmetic number, because the mean of its divisors is an integer number (333336833580).

Almost surely, 2^666673667159 is an apocalyptic number.

666673667159 is a deficient number, since it is larger than the sum of its proper divisors (1).

666673667159 is an equidigital number, since it uses as much as digits as its factorization.

666673667159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 308629440, while the sum is 68.

The spelling of 666673667159 in words is "six hundred sixty-six billion, six hundred seventy-three million, six hundred sixty-seven thousand, one hundred fifty-nine".