11281298520 has 256 divisors, whose sum is σ = 36884782080. Its totient is φ = 2752358400.

The previous prime is 11281298503. The next prime is 11281298521. The reversal of 11281298520 is 2589218211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11281298521) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6228415 + ... + 6230225.

It is an arithmetic number, because the mean of its divisors is an integer number (144081180).

Almost surely, 2^11281298520 is an apocalyptic number.

11281298520 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 11281298520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18442391040).

11281298520 is an abundant number, since it is smaller than the sum of its proper divisors (25603483560).

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

11281298520 is a wasteful number, since it uses less digits than its factorization.

11281298520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1946 (or 1942 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 39.

The spelling of 11281298520 in words is "eleven billion, two hundred eighty-one million, two hundred ninety-eight thousand, five hundred twenty".