166486848784 has 45 divisors (see below), whose sum is σ = 326767338373. Its totient is φ = 82173574976.

The previous prime is 166486848769. The next prime is 166486848797. The reversal of 166486848784 is 487848684661.

The square root of 166486848784 is 408028.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 164326458384 + 2160390400 = 405372^2 + 46480^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 135464682 + ... + 135465910.

Almost surely, 2^166486848784 is an apocalyptic number.

166486848784 is the 408028-th square number.

It is an amenable number.

166486848784 is a deficient number, since it is larger than the sum of its proper divisors (160280489589).

166486848784 is an frugal number, since it uses more digits than its factorization.

166486848784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2632 (or 1314 counting only the distinct ones).

The product of its digits is 396361728, while the sum is 70.

The spelling of 166486848784 in words is "one hundred sixty-six billion, four hundred eighty-six million, eight hundred forty-eight thousand, seven hundred eighty-four".