168670166866 has 8 divisors (see below), whose sum is σ = 253013206860. Its totient is φ = 84332431248.

The previous prime is 168670166849. The next prime is 168670166867. The reversal of 168670166866 is 668661076861.

It can be written as a sum of positive squares in 2 ways, for example, as 138886655625 + 29783511241 = 372675^2 + 172579^2 .

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

It is not an unprimeable number, because it can be changed into a prime (168670166867) 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, 1245621 + ... + 1374376.

Almost surely, 2^168670166866 is an apocalyptic number.

168670166866 is a deficient number, since it is larger than the sum of its proper divisors (84343039994).

168670166866 is a wasteful number, since it uses less digits than its factorization.

168670166866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2652188.

The product of its (nonzero) digits is 20901888, while the sum is 61.

The spelling of 168670166866 in words is "one hundred sixty-eight billion, six hundred seventy million, one hundred sixty-six thousand, eight hundred sixty-six".