11491200000 has 1056 divisors, whose sum is σ = 51171724800. Its totient is φ = 2488320000.

The previous prime is 11491199989. The next prime is 11491200013. The reversal of 11491200000 is 219411.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 604799991 + ... + 604800009.

Almost surely, 2^11491200000 is an apocalyptic number.

11491200000 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 11491200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25585862400).

11491200000 is an abundant number, since it is smaller than the sum of its proper divisors (39680524800).

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

11491200000 is an frugal number, since it uses more digits than its factorization.

11491200000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80 (or 36 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 11491200000 its reverse (219411), we get a palindrome (11491419411).

The spelling of 11491200000 in words is "eleven billion, four hundred ninety-one million, two hundred thousand".