166666575151516 has 72 divisors (see below), whose sum is σ = 323088638135760. Its totient is φ = 75169444542720.

The previous prime is 166666575151421. The next prime is 166666575151537. The reversal of 166666575151516 is 615151575666661.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37487886 + ... + 41697418.

It is an arithmetic number, because the mean of its divisors is an integer number (4487342196330).

Almost surely, 2^{166666575151516} is an apocalyptic number.

It is an amenable number.

166666575151516 is a deficient number, since it is larger than the sum of its proper divisors (156422062984244).

166666575151516 is a wasteful number, since it uses less digits than its factorization.

166666575151516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4210195 (or 4210182 counting only the distinct ones).

The product of its digits is 204120000, while the sum is 67.

The spelling of 166666575151516 in words is "one hundred sixty-six trillion, six hundred sixty-six billion, five hundred seventy-five million, one hundred fifty-one thousand, five hundred sixteen".