168173075747843 has 4 divisors (see below), whose sum is σ = 168187355548680. Its totient is φ = 168158795947008.

The previous prime is 168173075747827. The next prime is 168173075747851. The reversal of 168173075747843 is 348747570371861.

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 168173075747843 - 2⁴ = 168173075747827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168173075747863) 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, 7139882753 + ... + 7139906306.

It is an arithmetic number, because the mean of its divisors is an integer number (42046838887170).

Almost surely, 2^{168173075747843} is an apocalyptic number.

168173075747843 is a deficient number, since it is larger than the sum of its proper divisors (14279800837).

168173075747843 is a wasteful number, since it uses less digits than its factorization.

168173075747843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14279800836.

The product of its (nonzero) digits is 663828480, while the sum is 71.

The spelling of 168173075747843 in words is "one hundred sixty-eight trillion, one hundred seventy-three billion, seventy-five million, seven hundred forty-seven thousand, eight hundred forty-three".