68064373728 has 72 divisors (see below), whose sum is σ = 208447156008. Its totient is φ = 20942883072.

The previous prime is 68064373723. The next prime is 68064373733. The reversal of 68064373728 is 82737346086.

It is an interprime number because it is at equal distance from previous prime (68064373723) and next prime (68064373733).

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68064373723) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 9086050 + ... + 9093537.

It is an arithmetic number, because the mean of its divisors is an integer number (2895099389).

Almost surely, 2^68064373728 is an apocalyptic number.

It is an amenable number.

68064373728 is an abundant number, since it is smaller than the sum of its proper divisors (140382782280).

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

68064373728 is a wasteful number, since it uses less digits than its factorization.

68064373728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18179616 (or 18179605 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 54.

The spelling of 68064373728 in words is "sixty-eight billion, sixty-four million, three hundred seventy-three thousand, seven hundred twenty-eight".