68784727680 has 192 divisors, whose sum is σ = 237955367520. Its totient is φ = 18309150720.

The previous prime is 68784727663. The next prime is 68784727681. The reversal of 68784727680 is 8672748786.

68784727680 is a `hidden beast` number, since 6 + 87 + 8 + 472 + 7 + 6 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is not an unprimeable number, because it can be changed into a prime (68784727681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3232275 + ... + 3253485.

Almost surely, 2^68784727680 is an apocalyptic number.

68784727680 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 68784727680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118977683760).

68784727680 is an abundant number, since it is smaller than the sum of its proper divisors (169170639840).

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

68784727680 is a wasteful number, since it uses less digits than its factorization.

68784727680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21799 (or 21784 counting only the distinct ones).

The product of its (nonzero) digits is 50577408, while the sum is 63.

The spelling of 68784727680 in words is "sixty-eight billion, seven hundred eighty-four million, seven hundred twenty-seven thousand, six hundred eighty".