128032284378858 has 16 divisors (see below), whose sum is σ = 258704409673920. Its totient is φ = 42237454640256.

The previous prime is 128032284378851. The next prime is 128032284378893. The reversal of 128032284378858 is 858873482230821.

It is a junction number, because it is equal to n+sod(n) for n = 128032284378792 and 128032284378801.

It is not an unprimeable number, because it can be changed into a prime (128032284378851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109993370878 + ... + 109993372041.

It is an arithmetic number, because the mean of its divisors is an integer number (16169025604620).

Almost surely, 2^{128032284378858} is an apocalyptic number.

128032284378858 is an abundant number, since it is smaller than the sum of its proper divisors (130672125295062).

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

128032284378858 is a wasteful number, since it uses less digits than its factorization.

128032284378858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219986743021.

The product of its (nonzero) digits is 330301440, while the sum is 69.

The spelling of 128032284378858 in words is "one hundred twenty-eight trillion, thirty-two billion, two hundred eighty-four million, three hundred seventy-eight thousand, eight hundred fifty-eight".