166666666504 has 64 divisors (see below), whose sum is σ = 354505939200. Its totient is φ = 72822053376.

The previous prime is 166666666501. The next prime is 166666666549. The reversal of 166666666504 is 405666666661.

It is not an unprimeable number, because it can be changed into a prime (166666666501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2782212 + ... + 2841484.

It is an arithmetic number, because the mean of its divisors is an integer number (5539155300).

Almost surely, 2^166666666504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166666666504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177252969600).

166666666504 is an abundant number, since it is smaller than the sum of its proper divisors (187839272696).

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

166666666504 is a wasteful number, since it uses less digits than its factorization.

166666666504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60734 (or 60730 counting only the distinct ones).

The product of its (nonzero) digits is 33592320, while the sum is 58.

The spelling of 166666666504 in words is "one hundred sixty-six billion, six hundred sixty-six million, six hundred sixty-six thousand, five hundred four".