11994353856 has 224 divisors, whose sum is σ = 36595507200. Its totient is φ = 3849431040.

The previous prime is 11994353851. The next prime is 11994353911. The reversal of 11994353856 is 65835349911.

11994353856 is a `hidden beast` number, since 1 + 19 + 9 + 43 + 538 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (11994353851) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5595921 + ... + 5598063.

It is an arithmetic number, because the mean of its divisors is an integer number (163372800).

Almost surely, 2^11994353856 is an apocalyptic number.

11994353856 is a gapful number since it is divisible by the number (16) 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 11994353856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18297753600).

11994353856 is an abundant number, since it is smaller than the sum of its proper divisors (24601153344).

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

11994353856 is a wasteful number, since it uses less digits than its factorization.

11994353856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2284 (or 2268 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 54.

The spelling of 11994353856 in words is "eleven billion, nine hundred ninety-four million, three hundred fifty-three thousand, eight hundred fifty-six".