666596229059 has 2 divisors, whose sum is σ = 666596229060. Its totient is φ = 666596229058.

The previous prime is 666596229031. The next prime is 666596229097. The reversal of 666596229059 is 950922695666.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 666596229059 - 2⁸ = 666596228803 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 666596228986 and 666596229004.

It is not a weakly prime, because it can be changed into another prime (666596259059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333298114529 + 333298114530.

It is an arithmetic number, because the mean of its divisors is an integer number (333298114530).

Almost surely, 2^666596229059 is an apocalyptic number.

666596229059 is a deficient number, since it is larger than the sum of its proper divisors (1).

666596229059 is an equidigital number, since it uses as much as digits as its factorization.

666596229059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94478400, while the sum is 65.

The spelling of 666596229059 in words is "six hundred sixty-six billion, five hundred ninety-six million, two hundred twenty-nine thousand, fifty-nine".