166823315716 has 12 divisors (see below), whose sum is σ = 291948035932. Its totient is φ = 83409591168.

The previous prime is 166823315713. The next prime is 166823315753. The reversal of 166823315716 is 617513328661.

It can be written as a sum of positive squares in 2 ways, for example, as 77150617600 + 89672698116 = 277760^2 + 299454^2 .

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 166823315716.

It is not an unprimeable number, because it can be changed into a prime (166823315713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327345 + ... + 663928.

Almost surely, 2^166823315716 is an apocalyptic number.

It is an amenable number.

166823315716 is a deficient number, since it is larger than the sum of its proper divisors (125124720216).

166823315716 is a wasteful number, since it uses less digits than its factorization.

166823315716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033350 (or 1033348 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 49.

The spelling of 166823315716 in words is "one hundred sixty-six billion, eight hundred twenty-three million, three hundred fifteen thousand, seven hundred sixteen".