168421697166 has 32 divisors (see below), whose sum is σ = 338355283968. Its totient is φ = 55888679360.

The previous prime is 168421697153. The next prime is 168421697173. The reversal of 168421697166 is 661796124861.

168421697166 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10458781 + ... + 10474871.

It is an arithmetic number, because the mean of its divisors is an integer number (10573602624).

Almost surely, 2^168421697166 is an apocalyptic number.

168421697166 is an abundant number, since it is smaller than the sum of its proper divisors (169933586802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168421697166 is a wasteful number, since it uses less digits than its factorization.

168421697166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23816.

The product of its digits is 5225472, while the sum is 57.

The spelling of 168421697166 in words is "one hundred sixty-eight billion, four hundred twenty-one million, six hundred ninety-seven thousand, one hundred sixty-six".