68168327988 has 24 divisors (see below), whose sum is σ = 159858731200. Its totient is φ = 22608590400.

The previous prime is 68168327957. The next prime is 68168328001. The reversal of 68168327988 is 88972386186.

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, 14270713 + ... + 14275488.

Almost surely, 2^68168327988 is an apocalyptic number.

It is an amenable number.

68168327988 is an abundant number, since it is smaller than the sum of its proper divisors (91690403212).

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

68168327988 is a wasteful number, since it uses less digits than its factorization.

68168327988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28546407 (or 28546405 counting only the distinct ones).

The product of its digits is 55738368, while the sum is 66.

The spelling of 68168327988 in words is "sixty-eight billion, one hundred sixty-eight million, three hundred twenty-seven thousand, nine hundred eighty-eight".