68838547680 has 288 divisors, whose sum is σ = 280272091680. Its totient is φ = 15734476800.

The previous prime is 68838547669. The next prime is 68838547717. The reversal of 68838547680 is 8674583886.

68838547680 is a `hidden beast` number, since 6 + 8 + 8 + 3 + 8 + 547 + 6 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49080 + ... + 374280.

It is an arithmetic number, because the mean of its divisors is an integer number (973166985).

Almost surely, 2^68838547680 is an apocalyptic number.

68838547680 is a gapful number since it is divisible by the number (60) 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 68838547680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140136045840).

68838547680 is an abundant number, since it is smaller than the sum of its proper divisors (211433544000).

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

68838547680 is a wasteful number, since it uses less digits than its factorization.

68838547680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325239 (or 325218 counting only the distinct ones).

The product of its (nonzero) digits is 61931520, while the sum is 63.

The spelling of 68838547680 in words is "sixty-eight billion, eight hundred thirty-eight million, five hundred forty-seven thousand, six hundred eighty".