198043022456 has 8 divisors (see below), whose sum is σ = 371330667120. Its totient is φ = 99021511224.

The previous prime is 198043022417. The next prime is 198043022479. The reversal of 198043022456 is 654220340891.

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 12377688896 + ... + 12377688911.

It is an arithmetic number, because the mean of its divisors is an integer number (46416333390).

Almost surely, 2^198043022456 is an apocalyptic number.

It is an amenable number.

198043022456 is a deficient number, since it is larger than the sum of its proper divisors (173287644664).

198043022456 is a wasteful number, since it uses less digits than its factorization.

198043022456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24755377813 (or 24755377809 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 198043022456 in words is "one hundred ninety-eight billion, forty-three million, twenty-two thousand, four hundred fifty-six".