128432996352 has 114 divisors (see below), whose sum is σ = 371034764178. Its totient is φ = 42810212352.

The previous prime is 128432996323. The next prime is 128432996389. The reversal of 128432996352 is 253699234821.

128432996352 is a `hidden beast` number, since 1 + 284 + 3 + 2 + 9 + 9 + 6 + 352 = 666.

It can be written as a sum of positive squares in only one way, i.e., 86069477376 + 42363518976 = 293376^2 + 205824^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2332078 + ... + 2386514.

Almost surely, 2^128432996352 is an apocalyptic number.

128432996352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128432996352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185517382089).

128432996352 is an abundant number, since it is smaller than the sum of its proper divisors (242601767826).

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

128432996352 is an frugal number, since it uses more digits than its factorization.

128432996352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54479 (or 54442 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 54.

The spelling of 128432996352 in words is "one hundred twenty-eight billion, four hundred thirty-two million, nine hundred ninety-six thousand, three hundred fifty-two".