168568894677 has 4 divisors (see below), whose sum is σ = 224758526240. Its totient is φ = 112379263116.

The previous prime is 168568894673. The next prime is 168568894709. The reversal of 168568894677 is 776498865861.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 168568894677 - 2² = 168568894673 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 168568894599 and 168568894608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168568894673) 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, 28094815777 + ... + 28094815782.

It is an arithmetic number, because the mean of its divisors is an integer number (56189631560).

Almost surely, 2^168568894677 is an apocalyptic number.

It is an amenable number.

168568894677 is a deficient number, since it is larger than the sum of its proper divisors (56189631563).

168568894677 is an equidigital number, since it uses as much as digits as its factorization.

168568894677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56189631562.

The product of its digits is 975421440, while the sum is 75.

The spelling of 168568894677 in words is "one hundred sixty-eight billion, five hundred sixty-eight million, eight hundred ninety-four thousand, six hundred seventy-seven".