166861174534 has 8 divisors (see below), whose sum is σ = 250307870400. Its totient is φ = 83425217736.

The previous prime is 166861174517. The next prime is 166861174561. The reversal of 166861174534 is 435471168661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2645809 + ... + 2708140.

It is an arithmetic number, because the mean of its divisors is an integer number (31288483800).

Almost surely, 2^166861174534 is an apocalyptic number.

166861174534 is a deficient number, since it is larger than the sum of its proper divisors (83446695866).

166861174534 is a wasteful number, since it uses less digits than its factorization.

166861174534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5369534.

The product of its digits is 2903040, while the sum is 52.

The spelling of 166861174534 in words is "one hundred sixty-six billion, eight hundred sixty-one million, one hundred seventy-four thousand, five hundred thirty-four".