168649975228 has 12 divisors (see below), whose sum is σ = 337299950512. Its totient is φ = 72278560800.

The previous prime is 168649975187. The next prime is 168649975231. The reversal of 168649975228 is 822579946861.

168649975228 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3011606673 + ... + 3011606728.

Almost surely, 2^168649975228 is an apocalyptic number.

It is an amenable number.

168649975228 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168649975228 is a wasteful number, since it uses less digits than its factorization.

168649975228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6023213412 (or 6023213410 counting only the distinct ones).

The product of its digits is 104509440, while the sum is 67.

The spelling of 168649975228 in words is "one hundred sixty-eight billion, six hundred forty-nine million, nine hundred seventy-five thousand, two hundred twenty-eight".