68679874872 has 96 divisors (see below), whose sum is σ = 212724720000. Its totient is φ = 19609515072.

The previous prime is 68679874867. The next prime is 68679874889. The reversal of 68679874872 is 27847897686.

68679874872 is a `hidden beast` number, since 6 + 8 + 67 + 9 + 87 + 487 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 68679874872.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 710043 + ... + 800949.

It is an arithmetic number, because the mean of its divisors is an integer number (2215882500).

Almost surely, 2^68679874872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68679874872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106362360000).

68679874872 is an abundant number, since it is smaller than the sum of its proper divisors (144044845128).

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

68679874872 is a wasteful number, since it uses less digits than its factorization.

68679874872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92425 (or 92418 counting only the distinct ones).

The product of its digits is 455196672, while the sum is 72.

The spelling of 68679874872 in words is "sixty-eight billion, six hundred seventy-nine million, eight hundred seventy-four thousand, eight hundred seventy-two".