128932533756 has 120 divisors (see below), whose sum is σ = 363134269344. Its totient is φ = 39654956160.

The previous prime is 128932533749. The next prime is 128932533767. The reversal of 128932533756 is 657335239821.

128932533756 is a `hidden beast` number, since 1 + 2 + 8 + 9 + 32 + 533 + 75 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 13393561 + ... + 13403183.

Almost surely, 2^128932533756 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128932533756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181567134672).

128932533756 is an abundant number, since it is smaller than the sum of its proper divisors (234201735588).

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

128932533756 is a wasteful number, since it uses less digits than its factorization.

128932533756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12833 (or 12822 counting only the distinct ones).

The product of its digits is 8164800, while the sum is 54.

The spelling of 128932533756 in words is "one hundred twenty-eight billion, nine hundred thirty-two million, five hundred thirty-three thousand, seven hundred fifty-six".