68896720512 has 48 divisors (see below), whose sum is σ = 198257493330. Its totient is φ = 22965573120.

The previous prime is 68896720489. The next prime is 68896720531. The reversal of 68896720512 is 21502769886.

68896720512 is a `hidden beast` number, since 68 + 8 + 9 + 67 + 2 + 0 + 512 = 666.

It can be written as a sum of positive squares in only one way, i.e., 49593508416 + 19303212096 = 222696^2 + 138936^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29901939 + ... + 29904242.

Almost surely, 2^68896720512 is an apocalyptic number.

It is an amenable number.

68896720512 is an abundant number, since it is smaller than the sum of its proper divisors (129360772818).

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

68896720512 is a wasteful number, since it uses less digits than its factorization.

68896720512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59806201 (or 59806186 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 68896720512 in words is "sixty-eight billion, eight hundred ninety-six million, seven hundred twenty thousand, five hundred twelve".