68786678688 has 384 divisors, whose sum is σ = 230032373760. Its totient is φ = 17512796160.

The previous prime is 68786678687. The next prime is 68786678699. The reversal of 68786678688 is 88687668786.

It is a Harshad number since it is a multiple of its sum of digits (78).

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

It is not an unprimeable number, because it can be changed into a prime (68786678683) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 44928483 + ... + 44930013.

It is an arithmetic number, because the mean of its divisors is an integer number (599042640).

Almost surely, 2^68786678688 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 68786678688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115016186880).

68786678688 is an abundant number, since it is smaller than the sum of its proper divisors (161245695072).

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

68786678688 is a wasteful number, since it uses less digits than its factorization.

68786678688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740 (or 1732 counting only the distinct ones).

The product of its digits is 2080899072, while the sum is 78.

The spelling of 68786678688 in words is "sixty-eight billion, seven hundred eighty-six million, six hundred seventy-eight thousand, six hundred eighty-eight".