68616830688 has 96 divisors (see below), whose sum is σ = 206149789440. Its totient is φ = 19576304640.

The previous prime is 68616830671. The next prime is 68616830701. The reversal of 68616830688 is 88603861686.

It is a tau number, because it is divible by the number of its divisors (96).

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 15 ways as a sum of consecutive naturals, for example, 390468 + ... + 538236.

It is an arithmetic number, because the mean of its divisors is an integer number (2147393640).

Almost surely, 2^68616830688 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 68616830688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103074894720).

68616830688 is an abundant number, since it is smaller than the sum of its proper divisors (137532958752).

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

68616830688 is a wasteful number, since it uses less digits than its factorization.

68616830688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148480 (or 148472 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 60.

The spelling of 68616830688 in words is "sixty-eight billion, six hundred sixteen million, eight hundred thirty thousand, six hundred eighty-eight".