11805198288 has 160 divisors (see below), whose sum is σ = 33997824000. Its totient is φ = 3505282560.

The previous prime is 11805198269. The next prime is 11805198341. The reversal of 11805198288 is 88289150811.

It is a self number, because there is not a number n which added to its sum of digits gives 11805198288.

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, 9652045 + ... + 9653267.

It is an arithmetic number, because the mean of its divisors is an integer number (212486400).

Almost surely, 2^11805198288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11805198288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16998912000).

11805198288 is an abundant number, since it is smaller than the sum of its proper divisors (22192625712).

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

11805198288 is a wasteful number, since it uses less digits than its factorization.

11805198288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1777 (or 1771 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 51.

The spelling of 11805198288 in words is "eleven billion, eight hundred five million, one hundred ninety-eight thousand, two hundred eighty-eight".