198372708864 has 240 divisors, whose sum is σ = 633131557344. Its totient is φ = 59288371200.

The previous prime is 198372708839. The next prime is 198372708869. The reversal of 198372708864 is 468807273891.

198372708864 is a `hidden beast` number, since 198 + 372 + 70 + 8 + 8 + 6 + 4 = 666.

198372708864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (198372708869) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 3673419 + ... + 3727029.

Almost surely, 2^198372708864 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 198372708864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316565778672).

198372708864 is an abundant number, since it is smaller than the sum of its proper divisors (434758848480).

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

198372708864 is a wasteful number, since it uses less digits than its factorization.

198372708864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53719 (or 53700 counting only the distinct ones).

The product of its (nonzero) digits is 32514048, while the sum is 63.

The spelling of 198372708864 in words is "one hundred ninety-eight billion, three hundred seventy-two million, seven hundred eight thousand, eight hundred sixty-four".