166833334681 has 16 divisors (see below), whose sum is σ = 187989225984. Its totient is φ = 146902878144.

The previous prime is 166833334649. The next prime is 166833334709. The reversal of 166833334681 is 186433338661.

It is a cyclic number.

It is not a de Polignac number, because 166833334681 - 2⁵ = 166833334649 is a prime.

It is a super-2 number, since 2×166833334681² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166833334781) 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 in 15 ways as a sum of consecutive naturals, for example, 650446 + ... + 869911.

It is an arithmetic number, because the mean of its divisors is an integer number (11749326624).

Almost surely, 2^166833334681 is an apocalyptic number.

It is an amenable number.

166833334681 is a deficient number, since it is larger than the sum of its proper divisors (21155891303).

166833334681 is a wasteful number, since it uses less digits than its factorization.

166833334681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1520760.

The product of its digits is 4478976, while the sum is 52.

The spelling of 166833334681 in words is "one hundred sixty-six billion, eight hundred thirty-three million, three hundred thirty-four thousand, six hundred eighty-one".