166656227567 has 2 divisors, whose sum is σ = 166656227568. Its totient is φ = 166656227566.

The previous prime is 166656227539. The next prime is 166656227593. The reversal of 166656227567 is 765722656661.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166656227567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166656227537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83328113783 + 83328113784.

It is an arithmetic number, because the mean of its divisors is an integer number (83328113784).

Almost surely, 2^166656227567 is an apocalyptic number.

166656227567 is a deficient number, since it is larger than the sum of its proper divisors (1).

166656227567 is an equidigital number, since it uses as much as digits as its factorization.

166656227567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38102400, while the sum is 59.

The spelling of 166656227567 in words is "one hundred sixty-six billion, six hundred fifty-six million, two hundred twenty-seven thousand, five hundred sixty-seven".