166565714717127 has 48 divisors (see below), whose sum is σ = 244535143444704. Its totient is φ = 100774313164800.

The previous prime is 166565714717123. The next prime is 166565714717153. The reversal of 166565714717127 is 721717417565661.

It is not a de Polignac number, because 166565714717127 - 2² = 166565714717123 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166565714717123) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2706022783 + ... + 2706084335.

It is an arithmetic number, because the mean of its divisors is an integer number (5094482155098).

Almost surely, 2^{166565714717127} is an apocalyptic number.

166565714717127 is a deficient number, since it is larger than the sum of its proper divisors (77969428727577).

166565714717127 is a wasteful number, since it uses less digits than its factorization.

166565714717127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74352 (or 74341 counting only the distinct ones).

The product of its digits is 103723200, while the sum is 66.

The spelling of 166565714717127 in words is "one hundred sixty-six trillion, five hundred sixty-five billion, seven hundred fourteen million, seven hundred seventeen thousand, one hundred twenty-seven".