166682311812 has 48 divisors (see below), whose sum is σ = 432230131200. Its totient is φ = 55549095840.

The previous prime is 166682311801. The next prime is 166682311837. The reversal of 166682311812 is 218113286661.

It is an unprimeable number.

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, 362014 + ... + 681482.

It is an arithmetic number, because the mean of its divisors is an integer number (9004794400).

Almost surely, 2^166682311812 is an apocalyptic number.

166682311812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166682311812 is an abundant number, since it is smaller than the sum of its proper divisors (265547819388).

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

166682311812 is a wasteful number, since it uses less digits than its factorization.

166682311812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324313 (or 324305 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The spelling of 166682311812 in words is "one hundred sixty-six billion, six hundred eighty-two million, three hundred eleven thousand, eight hundred twelve".