128568385178 has 8 divisors (see below), whose sum is σ = 197337521568. Its totient is φ = 62789211324.

The previous prime is 128568385171. The next prime is 128568385189. The reversal of 128568385178 is 871583865821.

128568385178 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 128568385178.

It is not an unprimeable number, because it can be changed into a prime (128568385171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 747490526 + ... + 747490697.

It is an arithmetic number, because the mean of its divisors is an integer number (24667190196).

Almost surely, 2^128568385178 is an apocalyptic number.

128568385178 is a deficient number, since it is larger than the sum of its proper divisors (68769136390).

128568385178 is a wasteful number, since it uses less digits than its factorization.

128568385178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1494981268.

The product of its digits is 25804800, while the sum is 62.

The spelling of 128568385178 in words is "one hundred twenty-eight billion, five hundred sixty-eight million, three hundred eighty-five thousand, one hundred seventy-eight".