166351422246201 has 24 divisors (see below), whose sum is σ = 244824745838400. Its totient is φ = 108805956738336.

The previous prime is 166351422246181. The next prime is 166351422246293. The reversal of 166351422246201 is 102642224153661.

It is a happy number.

166351422246201 is a `hidden beast` number, since 1 + 6 + 6 + 3 + 5 + 14 + 2 + 2 + 2 + 4 + 620 + 1 = 666.

It is not a de Polignac number, because 166351422246201 - 2¹¹ = 166351422244153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166351422244201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16683430 + ... + 24719216.

It is an arithmetic number, because the mean of its divisors is an integer number (10201031076600).

Almost surely, 2^{166351422246201} is an apocalyptic number.

It is an amenable number.

166351422246201 is a deficient number, since it is larger than the sum of its proper divisors (78473323592199).

166351422246201 is a wasteful number, since it uses less digits than its factorization.

166351422246201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8079245 (or 8079242 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

Adding to 166351422246201 its reverse (102642224153661), we get a palindrome (268993646399862).

The spelling of 166351422246201 in words is "one hundred sixty-six trillion, three hundred fifty-one billion, four hundred twenty-two million, two hundred forty-six thousand, two hundred one".