68784561216 has 168 divisors, whose sum is σ = 237183452480. Its totient is φ = 18618356736.

The previous prime is 68784561187. The next prime is 68784561221. The reversal of 68784561216 is 61216548786.

68784561216 is a `hidden beast` number, since 6 + 8 + 7 + 8 + 4 + 5 + 612 + 16 = 666.

It is a tau number, because it is divible by the number of its divisors (168).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 372331 + ... + 525546.

Almost surely, 2^68784561216 is an apocalyptic number.

It is an amenable number.

68784561216 is an abundant number, since it is smaller than the sum of its proper divisors (168398891264).

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

68784561216 is a wasteful number, since it uses less digits than its factorization.

68784561216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897921 (or 897908 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The spelling of 68784561216 in words is "sixty-eight billion, seven hundred eighty-four million, five hundred sixty-one thousand, two hundred sixteen".