128369882511 has 16 divisors (see below), whose sum is σ = 204806650720. Its totient is φ = 78996850560.

The previous prime is 128369882491. The next prime is 128369882519. The reversal of 128369882511 is 115288963821.

128369882511 is a `hidden beast` number, since 1 + 2 + 8 + 36 + 98 + 8 + 2 + 511 = 666.

It is not a de Polignac number, because 128369882511 - 2⁶ = 128369882447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128369882519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182862730 + ... + 182863431.

It is an arithmetic number, because the mean of its divisors is an integer number (12800415670).

Almost surely, 2^128369882511 is an apocalyptic number.

128369882511 is a deficient number, since it is larger than the sum of its proper divisors (76436768209).

128369882511 is a wasteful number, since it uses less digits than its factorization.

128369882511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365726183 (or 365726177 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 54.

The spelling of 128369882511 in words is "one hundred twenty-eight billion, three hundred sixty-nine million, eight hundred eighty-two thousand, five hundred eleven".