667212428063 has 2 divisors, whose sum is σ = 667212428064. Its totient is φ = 667212428062.

The previous prime is 667212428041. The next prime is 667212428203. The reversal of 667212428063 is 360824212766.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 667212428063 - 2¹² = 667212423967 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 667212427999 and 667212428017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667212428033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333606214031 + 333606214032.

It is an arithmetic number, because the mean of its divisors is an integer number (333606214032).

Almost surely, 2^667212428063 is an apocalyptic number.

667212428063 is a deficient number, since it is larger than the sum of its proper divisors (1).

667212428063 is an equidigital number, since it uses as much as digits as its factorization.

667212428063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1161216, while the sum is 47.

The spelling of 667212428063 in words is "six hundred sixty-seven billion, two hundred twelve million, four hundred twenty-eight thousand, sixty-three".