128531275338 has 32 divisors (see below), whose sum is σ = 257744823552. Its totient is φ = 42730200000.

The previous prime is 128531275333. The next prime is 128531275381. The reversal of 128531275338 is 833572135821.

It is not an unprimeable number, because it can be changed into a prime (128531275333) 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, 3464688 + ... + 3501588.

It is an arithmetic number, because the mean of its divisors is an integer number (8054525736).

Almost surely, 2^128531275338 is an apocalyptic number.

128531275338 is an abundant number, since it is smaller than the sum of its proper divisors (129213548214).

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

128531275338 is a wasteful number, since it uses less digits than its factorization.

128531275338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38430.

The product of its digits is 1209600, while the sum is 48.

The spelling of 128531275338 in words is "one hundred twenty-eight billion, five hundred thirty-one million, two hundred seventy-five thousand, three hundred thirty-eight".