168243888668 has 12 divisors (see below), whose sum is σ = 294431169480. Its totient is φ = 84120697392.

The previous prime is 168243888667. The next prime is 168243888689. The reversal of 168243888668 is 866888342861.

It is a junction number, because it is equal to n+sod(n) for n = 168243888598 and 168243888607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168243888667) 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, 34598 + ... + 581106.

It is an arithmetic number, because the mean of its divisors is an integer number (24535930790).

Almost surely, 2^168243888668 is an apocalyptic number.

It is an amenable number.

168243888668 is a deficient number, since it is larger than the sum of its proper divisors (126187280812).

168243888668 is a wasteful number, since it uses less digits than its factorization.

168243888668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623476 (or 623474 counting only the distinct ones).

The product of its digits is 169869312, while the sum is 68.

The spelling of 168243888668 in words is "one hundred sixty-eight billion, two hundred forty-three million, eight hundred eighty-eight thousand, six hundred sixty-eight".