128568385170 has 192 divisors, whose sum is σ = 352015372800. Its totient is φ = 32494556160.

The previous prime is 128568385117. The next prime is 128568385171. The reversal of 128568385170 is 71583865821.

128568385170 is a `hidden beast` number, since 1 + 2 + 8 + 568 + 3 + 8 + 5 + 1 + 70 = 666.

It is not an unprimeable number, because it can be changed into a prime (128568385171) 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 95 ways as a sum of consecutive naturals, for example, 153239611 + ... + 153240449.

It is an arithmetic number, because the mean of its divisors is an integer number (1833413400).

Almost surely, 2^128568385170 is an apocalyptic number.

128568385170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 128568385170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176007686400).

128568385170 is an abundant number, since it is smaller than the sum of its proper divisors (223446987630).

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

128568385170 is a wasteful number, since it uses less digits than its factorization.

128568385170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465 (or 1462 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 54.

The spelling of 128568385170 in words is "one hundred twenty-eight billion, five hundred sixty-eight million, three hundred eighty-five thousand, one hundred seventy".