667159956227 has 2 divisors, whose sum is σ = 667159956228. Its totient is φ = 667159956226.

The previous prime is 667159956137. The next prime is 667159956263. The reversal of 667159956227 is 722659951766.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667159956227 is a prime.

It is not a weakly prime, because it can be changed into another prime (667159926227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333579978113 + 333579978114.

It is an arithmetic number, because the mean of its divisors is an integer number (333579978114).

Almost surely, 2^667159956227 is an apocalyptic number.

667159956227 is a deficient number, since it is larger than the sum of its proper divisors (1).

667159956227 is an equidigital number, since it uses as much as digits as its factorization.

667159956227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 85730400, while the sum is 65.

The spelling of 667159956227 in words is "six hundred sixty-seven billion, one hundred fifty-nine million, nine hundred fifty-six thousand, two hundred twenty-seven".