66157875166 has 8 divisors (see below), whose sum is σ = 99735490800. Its totient is φ = 32912711568.

The previous prime is 66157875149. The next prime is 66157875187.

66157875166 is nontrivially palindromic in base 10.

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

It is a self number, because there is not a number n which added to its sum of digits gives 66157875166.

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, 83112511 + ... + 83113306.

It is an arithmetic number, because the mean of its divisors is an integer number (12466936350).

Almost surely, 2^66157875166 is an apocalyptic number.

66157875166 is a deficient number, since it is larger than the sum of its proper divisors (33577615634).

66157875166 is a wasteful number, since it uses less digits than its factorization.

66157875166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166226018.

The product of its digits is 12700800, while the sum is 58.

The spelling of 66157875166 in words is "sixty-six billion, one hundred fifty-seven million, eight hundred seventy-five thousand, one hundred sixty-six".