166681583934 has 32 divisors (see below), whose sum is σ = 333766863360. Its totient is φ = 55493287872.

The previous prime is 166681583933. The next prime is 166681583941. The reversal of 166681583934 is 439385186661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166681583933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33075787 + ... + 33080825.

It is an arithmetic number, because the mean of its divisors is an integer number (10430214480).

Almost surely, 2^166681583934 is an apocalyptic number.

166681583934 is an abundant number, since it is smaller than the sum of its proper divisors (167085279426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166681583934 is a wasteful number, since it uses less digits than its factorization.

166681583934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10624.

The product of its digits is 22394880, while the sum is 60.

The spelling of 166681583934 in words is "one hundred sixty-six billion, six hundred eighty-one million, five hundred eighty-three thousand, nine hundred thirty-four".