188868535068 has 24 divisors (see below), whose sum is σ = 440766416272. Its totient is φ = 62945725824.

The previous prime is 188868535057. The next prime is 188868535069. The reversal of 188868535068 is 860535868881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188868535069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1231105 + ... + 1375992.

Almost surely, 2^188868535068 is an apocalyptic number.

It is an amenable number.

188868535068 is an abundant number, since it is smaller than the sum of its proper divisors (251897881204).

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

188868535068 is a wasteful number, since it uses less digits than its factorization.

188868535068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2613141 (or 2613139 counting only the distinct ones).

The product of its (nonzero) digits is 88473600, while the sum is 66.

The spelling of 188868535068 in words is "one hundred eighty-eight billion, eight hundred sixty-eight million, five hundred thirty-five thousand, sixty-eight".