667473063516947 has 2 divisors, whose sum is σ = 667473063516948. Its totient is φ = 667473063516946.

The previous prime is 667473063516863. The next prime is 667473063517067. The reversal of 667473063516947 is 749615360374766.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667473063516947 is a prime.

It is not a weakly prime, because it can be changed into another prime (667473063519947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333736531758473 + 333736531758474.

It is an arithmetic number, because the mean of its divisors is an integer number (333736531758474).

Almost surely, 2^{667473063516947} is an apocalyptic number.

667473063516947 is a deficient number, since it is larger than the sum of its proper divisors (1).

667473063516947 is an equidigital number, since it uses as much as digits as its factorization.

667473063516947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880541440, while the sum is 74.

The spelling of 667473063516947 in words is "six hundred sixty-seven trillion, four hundred seventy-three billion, sixty-three million, five hundred sixteen thousand, nine hundred forty-seven".