68887331171988 has 48 divisors (see below), whose sum is σ = 193367947153920. Its totient is φ = 18646194903264.

The previous prime is 68887331171987. The next prime is 68887331171999. The reversal of 68887331171988 is 88917113378886.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68887331171987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21581242506 + ... + 21581245697.

It is an arithmetic number, because the mean of its divisors is an integer number (4028498899040).

Almost surely, 2^{68887331171988} is an apocalyptic number.

It is an amenable number.

68887331171988 is an abundant number, since it is smaller than the sum of its proper divisors (124480615981932).

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

68887331171988 is a wasteful number, since it uses less digits than its factorization.

68887331171988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43162488236 (or 43162488234 counting only the distinct ones).

The product of its digits is 780337152, while the sum is 78.

The spelling of 68887331171988 in words is "sixty-eight trillion, eight hundred eighty-seven billion, three hundred thirty-one million, one hundred seventy-one thousand, nine hundred eighty-eight".