667366836291847 has 2 divisors, whose sum is σ = 667366836291848. Its totient is φ = 667366836291846.

The previous prime is 667366836291823. The next prime is 667366836291889. The reversal of 667366836291847 is 748192638663766.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667366836291847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667366836291047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333683418145923 + 333683418145924.

It is an arithmetic number, because the mean of its divisors is an integer number (333683418145924).

Almost surely, 2^{667366836291847} is an apocalyptic number.

667366836291847 is a deficient number, since it is larger than the sum of its proper divisors (1).

667366836291847 is an equidigital number, since it uses as much as digits as its factorization.

667366836291847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15801827328, while the sum is 82.

The spelling of 667366836291847 in words is "six hundred sixty-seven trillion, three hundred sixty-six billion, eight hundred thirty-six million, two hundred ninety-one thousand, eight hundred forty-seven".