166666354068 has 48 divisors (see below), whose sum is σ = 409960998720. Its totient is φ = 52553689344.

The previous prime is 166666354013. The next prime is 166666354073. The reversal of 166666354068 is 860453666661.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a junction number, because it is equal to n+sod(n) for n = 166666353999 and 166666354017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 385521 + ... + 694232.

It is an arithmetic number, because the mean of its divisors is an integer number (8540854140).

Almost surely, 2^166666354068 is an apocalyptic number.

It is an amenable number.

166666354068 is an abundant number, since it is smaller than the sum of its proper divisors (243294644652).

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

166666354068 is a wasteful number, since it uses less digits than its factorization.

166666354068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080456 (or 1080454 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 57.

The spelling of 166666354068 in words is "one hundred sixty-six billion, six hundred sixty-six million, three hundred fifty-four thousand, sixty-eight".