168777116927 has 4 divisors (see below), whose sum is σ = 172893632016. Its totient is φ = 164660601840.

The previous prime is 168777116923. The next prime is 168777116929. The reversal of 168777116927 is 729611777861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 729611777861 = 113 ⋅6456741397.

It is not a de Polignac number, because 168777116927 - 2² = 168777116923 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 168777116927.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168777116923) 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, 2058257483 + ... + 2058257564.

It is an arithmetic number, because the mean of its divisors is an integer number (43223408004).

Almost surely, 2^168777116927 is an apocalyptic number.

168777116927 is a deficient number, since it is larger than the sum of its proper divisors (4116515089).

168777116927 is an equidigital number, since it uses as much as digits as its factorization.

168777116927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4116515088.

The product of its digits is 12446784, while the sum is 62.

The spelling of 168777116927 in words is "one hundred sixty-eight billion, seven hundred seventy-seven million, one hundred sixteen thousand, nine hundred twenty-seven".