641604066227 has 2 divisors, whose sum is σ = 641604066228. Its totient is φ = 641604066226.

The previous prime is 641604066211. The next prime is 641604066239. The reversal of 641604066227 is 722660406146.

641604066227 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 641604066227 - 2⁴ = 641604066211 is a prime.

It is not a weakly prime, because it can be changed into another prime (641604062227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320802033113 + 320802033114.

It is an arithmetic number, because the mean of its divisors is an integer number (320802033114).

Almost surely, 2^641604066227 is an apocalyptic number.

641604066227 is a deficient number, since it is larger than the sum of its proper divisors (1).

641604066227 is an equidigital number, since it uses as much as digits as its factorization.

641604066227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 580608, while the sum is 44.

The spelling of 641604066227 in words is "six hundred forty-one billion, six hundred four million, sixty-six thousand, two hundred twenty-seven".