166703704127 has 2 divisors, whose sum is σ = 166703704128. Its totient is φ = 166703704126.

The previous prime is 166703704117. The next prime is 166703704163. The reversal of 166703704127 is 721407307661.

It is a weak prime.

It is an emirp because it is prime and its reverse (721407307661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166703704127 - 2²⁰ = 166702655551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166703704117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83351852063 + 83351852064.

It is an arithmetic number, because the mean of its divisors is an integer number (83351852064).

Almost surely, 2^166703704127 is an apocalyptic number.

166703704127 is a deficient number, since it is larger than the sum of its proper divisors (1).

166703704127 is an equidigital number, since it uses as much as digits as its factorization.

166703704127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 296352, while the sum is 44.

The spelling of 166703704127 in words is "one hundred sixty-six billion, seven hundred three million, seven hundred four thousand, one hundred twenty-seven".