198585521160 has 128 divisors (see below), whose sum is σ = 642654552960. Its totient is φ = 48801024000.

The previous prime is 198585521159. The next prime is 198585521161. The reversal of 198585521160 is 61125585891.

It is an interprime number because it is at equal distance from previous prime (198585521159) and next prime (198585521161).

It is not an unprimeable number, because it can be changed into a prime (198585521161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 831655 + ... + 1043465.

It is an arithmetic number, because the mean of its divisors is an integer number (5020738695).

Almost surely, 2^198585521160 is an apocalyptic number.

198585521160 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 198585521160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321327276480).

198585521160 is an abundant number, since it is smaller than the sum of its proper divisors (444069031800).

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

198585521160 is a wasteful number, since it uses less digits than its factorization.

198585521160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212439 (or 212435 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 51.

The spelling of 198585521160 in words is "one hundred ninety-eight billion, five hundred eighty-five million, five hundred twenty-one thousand, one hundred sixty".