128552734607280 has 80 divisors (see below), whose sum is σ = 398530620964320. Its totient is φ = 34279254503424.

The previous prime is 128552734607279. The next prime is 128552734607291. The reversal of 128552734607280 is 82706437255821.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5925097 + ... + 17094216.

It is an arithmetic number, because the mean of its divisors is an integer number (4981632762054).

Almost surely, 2^{128552734607280} is an apocalyptic number.

128552734607280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128552734607280 is an abundant number, since it is smaller than the sum of its proper divisors (269977886357040).

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

128552734607280 is a wasteful number, since it uses less digits than its factorization.

128552734607280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23042598 (or 23042592 counting only the distinct ones).

The product of its (nonzero) digits is 45158400, while the sum is 60.

The spelling of 128552734607280 in words is "one hundred twenty-eight trillion, five hundred fifty-two billion, seven hundred thirty-four million, six hundred seven thousand, two hundred eighty".