128208517376 has 36 divisors (see below), whose sum is σ = 269385505200. Its totient is φ = 60730348032.

The previous prime is 128208517373. The next prime is 128208517427. The reversal of 128208517376 is 673715802821.

It is not an unprimeable number, because it can be changed into a prime (128208517373) 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, 13174466 + ... + 13184193.

It is an arithmetic number, because the mean of its divisors is an integer number (7482930700).

Almost surely, 2^128208517376 is an apocalyptic number.

128208517376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

128208517376 is an abundant number, since it is smaller than the sum of its proper divisors (141176987824).

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

128208517376 is an equidigital number, since it uses as much as digits as its factorization.

128208517376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26358694 (or 26358680 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 50.

The spelling of 128208517376 in words is "one hundred twenty-eight billion, two hundred eight million, five hundred seventeen thousand, three hundred seventy-six".