128260008840 has 64 divisors (see below), whose sum is σ = 397192296960. Its totient is φ = 33099356160.

The previous prime is 128260008827. The next prime is 128260008841. The reversal of 128260008840 is 48800062821.

It is not an unprimeable number, because it can be changed into a prime (128260008841) 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, 17235529 + ... + 17242968.

It is an arithmetic number, because the mean of its divisors is an integer number (6206129640).

Almost surely, 2^128260008840 is an apocalyptic number.

128260008840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128260008840 is an abundant number, since it is smaller than the sum of its proper divisors (268932288120).

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

128260008840 is a wasteful number, since it uses less digits than its factorization.

128260008840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34478542 (or 34478538 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 39.

The spelling of 128260008840 in words is "one hundred twenty-eight billion, two hundred sixty million, eight thousand, eight hundred forty".