6664640410063 has 2 divisors, whose sum is σ = 6664640410064. Its totient is φ = 6664640410062.

The previous prime is 6664640410039. The next prime is 6664640410091. The reversal of 6664640410063 is 3600140464666.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6664640410063 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6664640409995 and 6664640410022.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6664640410033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3332320205031 + 3332320205032.

It is an arithmetic number, because the mean of its divisors is an integer number (3332320205032).

Almost surely, 2^{6664640410063} is an apocalyptic number.

6664640410063 is a deficient number, since it is larger than the sum of its proper divisors (1).

6664640410063 is an equidigital number, since it uses as much as digits as its factorization.

6664640410063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1492992, while the sum is 46.

The spelling of 6664640410063 in words is "six trillion, six hundred sixty-four billion, six hundred forty million, four hundred ten thousand, sixty-three".