198380690801664 has 704 divisors, whose sum is σ = 629909663944704. Its totient is φ = 54336436568064.

The previous prime is 198380690801641. The next prime is 198380690801677. The reversal of 198380690801664 is 466108096083891.

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, 10762248192 + ... + 10762266624.

It is an arithmetic number, because the mean of its divisors is an integer number (894758045376).

Almost surely, 2^{198380690801664} is an apocalyptic number.

198380690801664 is a gapful number since it is divisible by the number (14) 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 198380690801664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (314954831972352).

198380690801664 is an abundant number, since it is smaller than the sum of its proper divisors (431528973143040).

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

198380690801664 is a wasteful number, since it uses less digits than its factorization.

198380690801664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18722 (or 18704 counting only the distinct ones).

The product of its (nonzero) digits is 107495424, while the sum is 69.

The spelling of 198380690801664 in words is "one hundred ninety-eight trillion, three hundred eighty billion, six hundred ninety million, eight hundred one thousand, six hundred sixty-four".