128032284378859 has 16 divisors (see below), whose sum is σ = 149455046246400. Its totient is φ = 107393231034144.

The previous prime is 128032284378851. The next prime is 128032284378893. The reversal of 128032284378859 is 958873482230821.

It is a cyclic number.

It is not a de Polignac number, because 128032284378859 - 2³ = 128032284378851 is a prime.

It is a super-2 number, since 2×128032284378859² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 22418539 + ... + 27543700.

It is an arithmetic number, because the mean of its divisors is an integer number (9340940390400).

Almost surely, 2^{128032284378859} is an apocalyptic number.

128032284378859 is a deficient number, since it is larger than the sum of its proper divisors (21422761867541).

128032284378859 is an equidigital number, since it uses as much as digits as its factorization.

128032284378859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49970082.

The product of its (nonzero) digits is 371589120, while the sum is 70.

The spelling of 128032284378859 in words is "one hundred twenty-eight trillion, thirty-two billion, two hundred eighty-four million, three hundred seventy-eight thousand, eight hundred fifty-nine".