168218458671 has 8 divisors (see below), whose sum is σ = 224451606400. Its totient is φ = 112065475032.

The previous prime is 168218458669. The next prime is 168218458693. The reversal of 168218458671 is 176854812861.

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

It is not a de Polignac number, because 168218458671 - 2¹ = 168218458669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168218458651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20036125 + ... + 20044518.

It is an arithmetic number, because the mean of its divisors is an integer number (28056450800).

Almost surely, 2^168218458671 is an apocalyptic number.

168218458671 is a deficient number, since it is larger than the sum of its proper divisors (56233147729).

168218458671 is a wasteful number, since it uses less digits than its factorization.

168218458671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40082045.

The product of its digits is 5160960, while the sum is 57.

The spelling of 168218458671 in words is "one hundred sixty-eight billion, two hundred eighteen million, four hundred fifty-eight thousand, six hundred seventy-one".