128643604480 has 56 divisors (see below), whose sum is σ = 308725904772. Its totient is φ = 51457425408.

The previous prime is 128643604391. The next prime is 128643604493. The reversal of 128643604480 is 84406346821.

It is a happy number.

128643604480 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 116931170304 + 11712434176 = 341952^2 + 108224^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 128643604480.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1529397 + ... + 1611316.

Almost surely, 2^128643604480 is an apocalyptic number.

128643604480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128643604480 is an abundant number, since it is smaller than the sum of its proper divisors (180082300292).

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

128643604480 is an frugal number, since it uses more digits than its factorization.

128643604480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3140744 (or 3140720 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 46.

The spelling of 128643604480 in words is "one hundred twenty-eight billion, six hundred forty-three million, six hundred four thousand, four hundred eighty".