166066203201 has 8 divisors (see below), whose sum is σ = 221547490560. Its totient is φ = 110647858992.

The previous prime is 166066203109. The next prime is 166066203203. The reversal of 166066203201 is 102302660661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 166066203201 - 2⁹ = 166066202689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166066203203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15729630 + ... + 15740183.

It is an arithmetic number, because the mean of its divisors is an integer number (27693436320).

Almost surely, 2^166066203201 is an apocalyptic number.

It is an amenable number.

166066203201 is a deficient number, since it is larger than the sum of its proper divisors (55481287359).

166066203201 is a wasteful number, since it uses less digits than its factorization.

166066203201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31471575.

The product of its (nonzero) digits is 15552, while the sum is 33.

Adding to 166066203201 its reverse (102302660661), we get a palindrome (268368863862).

The spelling of 166066203201 in words is "one hundred sixty-six billion, sixty-six million, two hundred three thousand, two hundred one".