668032608371 has 2 divisors, whose sum is σ = 668032608372. Its totient is φ = 668032608370.

The previous prime is 668032608343. The next prime is 668032608389. The reversal of 668032608371 is 173806230866.

668032608371 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-668032608371 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (668032608571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334016304185 + 334016304186.

It is an arithmetic number, because the mean of its divisors is an integer number (334016304186).

Almost surely, 2^668032608371 is an apocalyptic number.

668032608371 is a deficient number, since it is larger than the sum of its proper divisors (1).

668032608371 is an equidigital number, since it uses as much as digits as its factorization.

668032608371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1741824, while the sum is 50.

The spelling of 668032608371 in words is "six hundred sixty-eight billion, thirty-two million, six hundred eight thousand, three hundred seventy-one".