168568222646 has 16 divisors (see below), whose sum is σ = 258063878688. Its totient is φ = 82558396800.

The previous prime is 168568222637. The next prime is 168568222681. The reversal of 168568222646 is 646222865861.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 168568222591 and 168568222600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2837210 + ... + 2896013.

It is an arithmetic number, because the mean of its divisors is an integer number (16128992418).

Almost surely, 2^168568222646 is an apocalyptic number.

168568222646 is a deficient number, since it is larger than the sum of its proper divisors (89495656042).

168568222646 is a wasteful number, since it uses less digits than its factorization.

168568222646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5733527.

The product of its digits is 13271040, while the sum is 56.

The spelling of 168568222646 in words is "one hundred sixty-eight billion, five hundred sixty-eight million, two hundred twenty-two thousand, six hundred forty-six".