128844874755 has 24 divisors (see below), whose sum is σ = 224937825840. Its totient is φ = 68222894400.

The previous prime is 128844874687. The next prime is 128844874757. The reversal of 128844874755 is 557478448821.

128844874755 is a `hidden beast` number, since 1 + 2 + 8 + 84 + 4 + 87 + 475 + 5 = 666.

It is not a de Polignac number, because 128844874755 - 2²⁰ = 128843826179 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128844874692 and 128844874701.

It is not an unprimeable number, because it can be changed into a prime (128844874757) 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 23 ways as a sum of consecutive naturals, for example, 10293096 + ... + 10305605.

It is an arithmetic number, because the mean of its divisors is an integer number (9372409410).

Almost surely, 2^128844874755 is an apocalyptic number.

128844874755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128844874755 is a deficient number, since it is larger than the sum of its proper divisors (96092951085).

128844874755 is a wasteful number, since it uses less digits than its factorization.

128844874755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20598851 (or 20598848 counting only the distinct ones).

The product of its digits is 80281600, while the sum is 63.

The spelling of 128844874755 in words is "one hundred twenty-eight billion, eight hundred forty-four million, eight hundred seventy-four thousand, seven hundred fifty-five".