166663833327 has 12 divisors (see below), whose sum is σ = 240740259240. Its totient is φ = 111107555568.

The previous prime is 166663833289. The next prime is 166663833331. The reversal of 166663833327 is 723338366661.

It is not a de Polignac number, because 166663833327 - 2⁸ = 166663833071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166663833397) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 916648 + ... + 1083314.

It is an arithmetic number, because the mean of its divisors is an integer number (20061688270).

Almost surely, 2^166663833327 is an apocalyptic number.

166663833327 is a deficient number, since it is larger than the sum of its proper divisors (74076425913).

166663833327 is a wasteful number, since it uses less digits than its factorization.

166663833327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277782 (or 277779 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 54.

The spelling of 166663833327 in words is "one hundred sixty-six billion, six hundred sixty-three million, eight hundred thirty-three thousand, three hundred twenty-seven".