11391320908800 has 2112 divisors, whose sum is σ = 49748663500800. Its totient is φ = 2499467673600.

The previous prime is 11391320908771. The next prime is 11391320908871. The reversal of 11391320908800 is 880902319311.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 25948338981 + ... + 25948339419.

It is an arithmetic number, because the mean of its divisors is an integer number (23555238400).

Almost surely, 2^{11391320908800} is an apocalyptic number.

11391320908800 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 11391320908800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24874331750400).

11391320908800 is an abundant number, since it is smaller than the sum of its proper divisors (38357342592000).

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

11391320908800 is a wasteful number, since it uses less digits than its factorization.

11391320908800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689 (or 660 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The spelling of 11391320908800 in words is "eleven trillion, three hundred ninety-one billion, three hundred twenty million, nine hundred eight thousand, eight hundred".