168677879817 has 8 divisors (see below), whose sum is σ = 224926580896. Its totient is φ = 112440549312.

The previous prime is 168677879809. The next prime is 168677879819. The reversal of 168677879817 is 718978776861.

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

It is not a de Polignac number, because 168677879817 - 2³ = 168677879809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168677879819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2807968 + ... + 2867409.

It is an arithmetic number, because the mean of its divisors is an integer number (28115822612).

Almost surely, 2^168677879817 is an apocalyptic number.

It is an amenable number.

168677879817 is a deficient number, since it is larger than the sum of its proper divisors (56248701079).

168677879817 is an equidigital number, since it uses as much as digits as its factorization.

168677879817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5685287.

The product of its digits is 398297088, while the sum is 75.

The spelling of 168677879817 in words is "one hundred sixty-eight billion, six hundred seventy-seven million, eight hundred seventy-nine thousand, eight hundred seventeen".