198054124128 has 72 divisors (see below), whose sum is σ = 643675909968. Its totient is φ = 56586892032.

The previous prime is 198054124097. The next prime is 198054124141. The reversal of 198054124128 is 821421450891.

198054124128 is a `hidden beast` number, since 1 + 9 + 80 + 541 + 2 + 4 + 1 + 28 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

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 11 ways as a sum of consecutive naturals, for example, 49118551 + ... + 49122582.

It is an arithmetic number, because the mean of its divisors is an integer number (8939943194).

Almost surely, 2^198054124128 is an apocalyptic number.

198054124128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

198054124128 is an abundant number, since it is smaller than the sum of its proper divisors (445621785840).

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

198054124128 is a wasteful number, since it uses less digits than its factorization.

198054124128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98241156 (or 98241145 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

The spelling of 198054124128 in words is "one hundred ninety-eight billion, fifty-four million, one hundred twenty-four thousand, one hundred twenty-eight".