198177140568 has 192 divisors, whose sum is σ = 570331238400. Its totient is φ = 57232806400.

The previous prime is 198177140531. The next prime is 198177140653. The reversal of 198177140568 is 865041771891.

198177140568 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18763273 + ... + 18773831.

It is an arithmetic number, because the mean of its divisors is an integer number (2970475200).

Almost surely, 2^198177140568 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 198177140568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285165619200).

198177140568 is an abundant number, since it is smaller than the sum of its proper divisors (372154097832).

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

198177140568 is a wasteful number, since it uses less digits than its factorization.

198177140568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10894 (or 10879 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 57.

The spelling of 198177140568 in words is "one hundred ninety-eight billion, one hundred seventy-seven million, one hundred forty thousand, five hundred sixty-eight".