188704424128 has 112 divisors (see below), whose sum is σ = 425416919040. Its totient is φ = 82272153600.

The previous prime is 188704424119. The next prime is 188704424147. The reversal of 188704424128 is 821424407881.

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 15 ways as a sum of consecutive naturals, for example, 2427853 + ... + 2504371.

Almost surely, 2^188704424128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 188704424128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212708459520).

188704424128 is an abundant number, since it is smaller than the sum of its proper divisors (236712494912).

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

188704424128 is a wasteful number, since it uses less digits than its factorization.

188704424128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76686 (or 76676 counting only the distinct ones).

The product of its (nonzero) digits is 917504, while the sum is 49.

The spelling of 188704424128 in words is "one hundred eighty-eight billion, seven hundred four million, four hundred twenty-four thousand, one hundred twenty-eight".