198611111322 has 128 divisors (see below), whose sum is σ = 496714014720. Its totient is φ = 58419506880.

The previous prime is 198611111287. The next prime is 198611111411. The reversal of 198611111322 is 223111116891.

198611111322 is a `hidden beast` number, since 1 + 9 + 8 + 611 + 1 + 1 + 1 + 32 + 2 = 666.

198611111322 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1348747 + ... + 1488737.

It is an arithmetic number, because the mean of its divisors is an integer number (3880578240).

Almost surely, 2^198611111322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198611111322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248357007360).

198611111322 is an abundant number, since it is smaller than the sum of its proper divisors (298102903398).

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

198611111322 is a wasteful number, since it uses less digits than its factorization.

198611111322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140105 (or 140099 counting only the distinct ones).

The product of its digits is 5184, while the sum is 36.

The spelling of 198611111322 in words is "one hundred ninety-eight billion, six hundred eleven million, one hundred eleven thousand, three hundred twenty-two".