68321187984 has 40 divisors (see below), whose sum is σ = 201710175040. Its totient is φ = 19520339328.

The previous prime is 68321187973. The next prime is 68321187989. The reversal of 68321187984 is 48978112386.

It is not an unprimeable number, because it can be changed into a prime (68321187989) 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, 101668099 + ... + 101668770.

It is an arithmetic number, because the mean of its divisors is an integer number (5042754376).

Almost surely, 2^68321187984 is an apocalyptic number.

It is an amenable number.

68321187984 is an abundant number, since it is smaller than the sum of its proper divisors (133388987056).

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

68321187984 is a wasteful number, since it uses less digits than its factorization.

68321187984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203336887 (or 203336881 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 57.

The spelling of 68321187984 in words is "sixty-eight billion, three hundred twenty-one million, one hundred eighty-seven thousand, nine hundred eighty-four".