68678665792 has 224 divisors, whose sum is σ = 157306060800. Its totient is φ = 29465856000.

The previous prime is 68678665733. The next prime is 68678665801. The reversal of 68678665792 is 29756687686.

68678665792 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 196786834 + ... + 196787182.

It is an arithmetic number, because the mean of its divisors is an integer number (702259200).

Almost surely, 2^68678665792 is an apocalyptic number.

68678665792 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68678665792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78653030400).

68678665792 is an abundant number, since it is smaller than the sum of its proper divisors (88627395008).

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

68678665792 is a wasteful number, since it uses less digits than its factorization.

68678665792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601 (or 591 counting only the distinct ones).

The product of its digits is 365783040, while the sum is 70.

The spelling of 68678665792 in words is "sixty-eight billion, six hundred seventy-eight million, six hundred sixty-five thousand, seven hundred ninety-two".