66228626906927 has 2 divisors, whose sum is σ = 66228626906928. Its totient is φ = 66228626906926.

The previous prime is 66228626906891. The next prime is 66228626906969. The reversal of 66228626906927 is 72960962682266.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66228626906927 - 2³² = 66224331939631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66228626906227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33114313453463 + 33114313453464.

It is an arithmetic number, because the mean of its divisors is an integer number (33114313453464).

Almost surely, 2^{66228626906927} is an apocalyptic number.

66228626906927 is a deficient number, since it is larger than the sum of its proper divisors (1).

66228626906927 is an equidigital number, since it uses as much as digits as its factorization.

66228626906927 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 564350976, while the sum is 71.

The spelling of 66228626906927 in words is "sixty-six trillion, two hundred twenty-eight billion, six hundred twenty-six million, nine hundred six thousand, nine hundred twenty-seven".