128744571932 has 24 divisors (see below), whose sum is σ = 237426511392. Its totient is φ = 60963848000.

The previous prime is 128744571931. The next prime is 128744571947. The reversal of 128744571932 is 239175447821.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128744571931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6918419 + ... + 6937002.

It is an arithmetic number, because the mean of its divisors is an integer number (9892771308).

Almost surely, 2^128744571932 is an apocalyptic number.

It is an amenable number.

128744571932 is a deficient number, since it is larger than the sum of its proper divisors (108681939460).

128744571932 is a wasteful number, since it uses less digits than its factorization.

128744571932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13855549 (or 13855547 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 53.

The spelling of 128744571932 in words is "one hundred twenty-eight billion, seven hundred forty-four million, five hundred seventy-one thousand, nine hundred thirty-two".