128670308823 has 32 divisors (see below), whose sum is σ = 208707494400. Its totient is φ = 68873435136.

The previous prime is 128670308821. The next prime is 128670308843. The reversal of 128670308823 is 328803076821.

It is not a de Polignac number, because 128670308823 - 2¹ = 128670308821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128670308821) 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 31 ways as a sum of consecutive naturals, for example, 1776186 + ... + 1847207.

It is an arithmetic number, because the mean of its divisors is an integer number (6522109200).

Almost surely, 2^128670308823 is an apocalyptic number.

128670308823 is a deficient number, since it is larger than the sum of its proper divisors (80037185577).

128670308823 is a wasteful number, since it uses less digits than its factorization.

128670308823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3623511.

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 128670308823 in words is "one hundred twenty-eight billion, six hundred seventy million, three hundred eight thousand, eight hundred twenty-three".