67068743728 has 80 divisors (see below), whose sum is σ = 158129164800. Its totient is φ = 27493967424.

The previous prime is 67068743711. The next prime is 67068743773. The reversal of 67068743728 is 82734786076.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139450 + ... + 391897.

It is an arithmetic number, because the mean of its divisors is an integer number (1976614560).

Almost surely, 2^67068743728 is an apocalyptic number.

It is an amenable number.

67068743728 is an abundant number, since it is smaller than the sum of its proper divisors (91060421072).

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

67068743728 is a wasteful number, since it uses less digits than its factorization.

67068743728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531399 (or 531379 counting only the distinct ones).

The product of its (nonzero) digits is 18966528, while the sum is 58.

The spelling of 67068743728 in words is "sixty-seven billion, sixty-eight million, seven hundred forty-three thousand, seven hundred twenty-eight".