128724523524 has 27 divisors (see below), whose sum is σ = 325392431637. Its totient is φ = 42907456944.

The previous prime is 128724523511. The next prime is 128724523547. The reversal of 128724523524 is 425325427821.

The square root of 128724523524 is 358782.

It is a perfect power (a square), and thus also a powerful number.

128724523524 is a `hidden beast` number, since 1 + 2 + 8 + 72 + 4 + 52 + 3 + 524 = 666.

It can be written as a sum of positive squares in only one way, i.e., 88976924100 + 39747599424 = 298290^2 + 199368^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 128724523524.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2122794 + ... + 2182590.

Almost surely, 2^128724523524 is an apocalyptic number.

128724523524 is the 358782-nd square number.

It is an amenable number.

128724523524 is an abundant number, since it is smaller than the sum of its proper divisors (196667908113).

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

128724523524 is an frugal number, since it uses more digits than its factorization.

128724523524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119604 (or 59802 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 45.

The spelling of 128724523524 in words is "one hundred twenty-eight billion, seven hundred twenty-four million, five hundred twenty-three thousand, five hundred twenty-four".