198268511960 has 128 divisors (see below), whose sum is σ = 494944344000. Its totient is φ = 71173380096.

The previous prime is 198268511951. The next prime is 198268511971. The reversal of 198268511960 is 69115862891.

It is a junction number, because it is equal to n+sod(n) for n = 198268511896 and 198268511905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1083254 + ... + 1252986.

Almost surely, 2^198268511960 is an apocalyptic number.

198268511960 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 198268511960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247472172000).

198268511960 is an abundant number, since it is smaller than the sum of its proper divisors (296675832040).

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

198268511960 is a wasteful number, since it uses less digits than its factorization.

198268511960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169845 (or 169841 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 56.

The spelling of 198268511960 in words is "one hundred ninety-eight billion, two hundred sixty-eight million, five hundred eleven thousand, nine hundred sixty".