11554521356400 has 120 divisors (see below), whose sum is σ = 40377800131584. Its totient is φ = 2801096083200.

The previous prime is 11554521356369. The next prime is 11554521356401. The reversal of 11554521356400 is 465312545511.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11554521356401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 437658064 + ... + 437684463.

Almost surely, 2^{11554521356400} is an apocalyptic number.

11554521356400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11554521356400 is an abundant number, since it is smaller than the sum of its proper divisors (28823278775184).

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

11554521356400 is a wasteful number, since it uses less digits than its factorization.

11554521356400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875342559 (or 875342548 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 42.

The spelling of 11554521356400 in words is "eleven trillion, five hundred fifty-four billion, five hundred twenty-one million, three hundred fifty-six thousand, four hundred".