68480085968 has 40 divisors (see below), whose sum is σ = 151668084288. Its totient is φ = 29342103552.

The previous prime is 68480085881. The next prime is 68480086009. The reversal of 68480085968 is 86958008486.

It is a Cunningham number, because it is equal to 261687²-1.

It is a self number, because there is not a number n which added to its sum of digits gives 68480085968.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 457955 + ... + 588797.

Almost surely, 2^68480085968 is an apocalyptic number.

It is an amenable number.

68480085968 is an abundant number, since it is smaller than the sum of its proper divisors (83187998320).

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

68480085968 is a wasteful number, since it uses less digits than its factorization.

68480085968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135531 (or 135525 counting only the distinct ones).

The product of its (nonzero) digits is 26542080, while the sum is 62.

The spelling of 68480085968 in words is "sixty-eight billion, four hundred eighty million, eighty-five thousand, nine hundred sixty-eight".