128580382528 has 56 divisors (see below), whose sum is σ = 275717084328. Its totient is φ = 59142137856.

The previous prime is 128580382523. The next prime is 128580382547. The reversal of 128580382528 is 825283085821.

It can be written as a sum of positive squares in 4 ways, for example, as 16601807104 + 111978575424 = 128848^2 + 334632^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128580382523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19951 + ... + 507502.

It is an arithmetic number, because the mean of its divisors is an integer number (4923519363).

Almost surely, 2^128580382528 is an apocalyptic number.

It is an amenable number.

128580382528 is an abundant number, since it is smaller than the sum of its proper divisors (147136701800).

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

128580382528 is a wasteful number, since it uses less digits than its factorization.

128580382528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527771 (or 527761 counting only the distinct ones).

The product of its (nonzero) digits is 2457600, while the sum is 52.

The spelling of 128580382528 in words is "one hundred twenty-eight billion, five hundred eighty million, three hundred eighty-two thousand, five hundred twenty-eight".