11554323543216 has 80 divisors (see below), whose sum is σ = 33165594453600. Its totient is φ = 3851393974272.

The previous prime is 11554323543211. The next prime is 11554323543241. The reversal of 11554323543216 is 61234532345511.

11554323543216 is a `hidden beast` number, since 1 + 1 + 5 + 54 + 32 + 3 + 543 + 21 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (11554323543211) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 65964040 + ... + 66138968.

It is an arithmetic number, because the mean of its divisors is an integer number (414569930670).

Almost surely, 2^{11554323543216} is an apocalyptic number.

11554323543216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11554323543216 is an abundant number, since it is smaller than the sum of its proper divisors (21611270910384).

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

11554323543216 is a wasteful number, since it uses less digits than its factorization.

11554323543216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327843 (or 327831 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 45.

Adding to 11554323543216 its reverse (61234532345511), we get a palindrome (72788855888727).

The spelling of 11554323543216 in words is "eleven trillion, five hundred fifty-four billion, three hundred twenty-three million, five hundred forty-three thousand, two hundred sixteen".