168456213165 has 16 divisors (see below), whose sum is σ = 273948466176. Its totient is φ = 88370472000.

The previous prime is 168456213161. The next prime is 168456213169. The reversal of 168456213165 is 561312654861.

It is an interprime number because it is at equal distance from previous prime (168456213161) and next prime (168456213169).

It is not a de Polignac number, because 168456213165 - 2² = 168456213161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168456213161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92051661 + ... + 92053490.

It is an arithmetic number, because the mean of its divisors is an integer number (17121779136).

Almost surely, 2^168456213165 is an apocalyptic number.

168456213165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

168456213165 is a deficient number, since it is larger than the sum of its proper divisors (105492253011).

168456213165 is a wasteful number, since it uses less digits than its factorization.

168456213165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184105220.

The product of its digits is 1036800, while the sum is 48.

The spelling of 168456213165 in words is "one hundred sixty-eight billion, four hundred fifty-six million, two hundred thirteen thousand, one hundred sixty-five".