11281898880 has 384 divisors, whose sum is σ = 45144889920. Its totient is φ = 2542731264.

The previous prime is 11281898879. The next prime is 11281898893. The reversal of 11281898880 is 8889818211.

It is a tau number, because it is divible by the number of its divisors (384).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2941444 + ... + 2945276.

Almost surely, 2^11281898880 is an apocalyptic number.

11281898880 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 11281898880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22572444960).

11281898880 is an abundant number, since it is smaller than the sum of its proper divisors (33862991040).

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

11281898880 is a wasteful number, since it uses less digits than its factorization.

11281898880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3938 (or 3923 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 54.

The spelling of 11281898880 in words is "eleven billion, two hundred eighty-one million, eight hundred ninety-eight thousand, eight hundred eighty".