198428336512 has 192 divisors, whose sum is σ = 467151179040. Its totient is φ = 83700449280.

The previous prime is 198428336501. The next prime is 198428336527. The reversal of 198428336512 is 215633824891.

It is a super-2 number, since 2×198428336512² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 198428336512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116928048 + ... + 116929744.

Almost surely, 2^198428336512 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 198428336512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233575589520).

198428336512 is an abundant number, since it is smaller than the sum of its proper divisors (268722842528).

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

198428336512 is a wasteful number, since it uses less digits than its factorization.

198428336512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2009 (or 1990 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 52.

The spelling of 198428336512 in words is "one hundred ninety-eight billion, four hundred twenty-eight million, three hundred thirty-six thousand, five hundred twelve".