668826905027 has 2 divisors, whose sum is σ = 668826905028. Its totient is φ = 668826905026.

The previous prime is 668826904997. The next prime is 668826905029. The reversal of 668826905027 is 720509628866.

668826905027 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 not a de Polignac number, because 668826905027 - 2³² = 664531937731 is a prime.

Together with 668826905029, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (668826905029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334413452513 + 334413452514.

It is an arithmetic number, because the mean of its divisors is an integer number (334413452514).

Almost surely, 2^668826905027 is an apocalyptic number.

668826905027 is a deficient number, since it is larger than the sum of its proper divisors (1).

668826905027 is an equidigital number, since it uses as much as digits as its factorization.

668826905027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17418240, while the sum is 59.

The spelling of 668826905027 in words is "six hundred sixty-eight billion, eight hundred twenty-six million, nine hundred five thousand, twenty-seven".