198565927020 has 144 divisors (see below), whose sum is σ = 604442049120. Its totient is φ = 52764441600.

The previous prime is 198565926971. The next prime is 198565927069. The reversal of 198565927020 is 20729565891.

198565927020 is a `hidden beast` number, since 1 + 9 + 8 + 565 + 9 + 2 + 70 + 2 + 0 = 666.

198565927020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (198565926971) and next prime (198565927069).

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, 76992091 + ... + 76994669.

It is an arithmetic number, because the mean of its divisors is an integer number (4197514230).

Almost surely, 2^198565927020 is an apocalyptic number.

198565927020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198565927020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302221024560).

198565927020 is an abundant number, since it is smaller than the sum of its proper divisors (405876122100).

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

198565927020 is a wasteful number, since it uses less digits than its factorization.

198565927020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3936 (or 3931 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 54.

The spelling of 198565927020 in words is "one hundred ninety-eight billion, five hundred sixty-five million, nine hundred twenty-seven thousand, twenty".