198891970560 has 896 divisors, whose sum is σ = 764365248000. Its totient is φ = 48884613120.

The previous prime is 198891970549. The next prime is 198891970601. The reversal of 198891970560 is 65079198891.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1334845366 + ... + 1334845514.

Almost surely, 2^198891970560 is an apocalyptic number.

198891970560 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 198891970560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (382182624000).

198891970560 is an abundant number, since it is smaller than the sum of its proper divisors (565473277440).

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

198891970560 is a wasteful number, since it uses less digits than its factorization.

198891970560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 63.

The spelling of 198891970560 in words is "one hundred ninety-eight billion, eight hundred ninety-one million, nine hundred seventy thousand, five hundred sixty".