128080789220 has 12 divisors (see below), whose sum is σ = 268969657404. Its totient is φ = 51232315680.

The previous prime is 128080789217. The next prime is 128080789229. The reversal of 128080789220 is 22987080821.

It can be written as a sum of positive squares in 2 ways, for example, as 23684594404 + 104396194816 = 153898^2 + 323104^2 .

It is not an unprimeable number, because it can be changed into a prime (128080789229) 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, 3202019711 + ... + 3202019750.

It is an arithmetic number, because the mean of its divisors is an integer number (22414138117).

Almost surely, 2^128080789220 is an apocalyptic number.

128080789220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128080789220 is an abundant number, since it is smaller than the sum of its proper divisors (140888868184).

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

128080789220 is a wasteful number, since it uses less digits than its factorization.

128080789220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6404039470 (or 6404039468 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 47.

The spelling of 128080789220 in words is "one hundred twenty-eight billion, eighty million, seven hundred eighty-nine thousand, two hundred twenty".