168158709143 has 4 divisors (see below), whose sum is σ = 168341690160. Its totient is φ = 167975728128.

The previous prime is 168158709139. The next prime is 168158709151. The reversal of 168158709143 is 341907851861.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 168158709143 - 2² = 168158709139 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 (168158709343) 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, 91489130 + ... + 91490967.

It is an arithmetic number, because the mean of its divisors is an integer number (42085422540).

Almost surely, 2^168158709143 is an apocalyptic number.

168158709143 is a deficient number, since it is larger than the sum of its proper divisors (182981017).

168158709143 is an equidigital number, since it uses as much as digits as its factorization.

168158709143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182981016.

The product of its (nonzero) digits is 1451520, while the sum is 53.

The spelling of 168158709143 in words is "one hundred sixty-eight billion, one hundred fifty-eight million, seven hundred nine thousand, one hundred forty-three".