197489786880 has 272 divisors, whose sum is σ = 640213678080. Its totient is φ = 51976863744.

The previous prime is 197489786807. The next prime is 197489786891. The reversal of 197489786880 is 88687984791.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77658889 + ... + 77661431.

Almost surely, 2^197489786880 is an apocalyptic number.

197489786880 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 197489786880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320106839040).

197489786880 is an abundant number, since it is smaller than the sum of its proper divisors (442723891200).

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

197489786880 is an frugal number, since it uses more digits than its factorization.

197489786880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2662 (or 2632 counting only the distinct ones).

The product of its (nonzero) digits is 390168576, while the sum is 75.

The spelling of 197489786880 in words is "one hundred ninety-seven billion, four hundred eighty-nine million, seven hundred eighty-six thousand, eight hundred eighty".