128989873404 has 216 divisors, whose sum is σ = 405511692768. Its totient is φ = 34348769280.

The previous prime is 128989873399. The next prime is 128989873423. The reversal of 128989873404 is 404378989821.

128989873404 is a `hidden beast` number, since 1 + 2 + 89 + 89 + 8 + 73 + 404 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3067884 + ... + 3109644.

It is an arithmetic number, because the mean of its divisors is an integer number (1877368948).

Almost surely, 2^128989873404 is an apocalyptic number.

128989873404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128989873404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202755846384).

128989873404 is an abundant number, since it is smaller than the sum of its proper divisors (276521819364).

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

128989873404 is a wasteful number, since it uses less digits than its factorization.

128989873404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41905 (or 41893 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 63.

The spelling of 128989873404 in words is "one hundred twenty-eight billion, nine hundred eighty-nine million, eight hundred seventy-three thousand, four hundred four".