668355023299 has 2 divisors, whose sum is σ = 668355023300. Its totient is φ = 668355023298.

The previous prime is 668355023293. The next prime is 668355023309. The reversal of 668355023299 is 992320553866.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 668355023299 - 2¹⁹ = 668354499011 is a prime.

It is not a weakly prime, because it can be changed into another prime (668355023293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334177511649 + 334177511650.

It is an arithmetic number, because the mean of its divisors is an integer number (334177511650).

Almost surely, 2^668355023299 is an apocalyptic number.

668355023299 is a deficient number, since it is larger than the sum of its proper divisors (1).

668355023299 is an equidigital number, since it uses as much as digits as its factorization.

668355023299 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20995200, while the sum is 58.

The spelling of 668355023299 in words is "six hundred sixty-eight billion, three hundred fifty-five million, twenty-three thousand, two hundred ninety-nine".