13559121888 has 96 divisors (see below), whose sum is σ = 39222158976. Its totient is φ = 4074997248.

The previous prime is 13559121887. The next prime is 13559121923. The reversal of 13559121888 is 88812195531.

13559121888 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 13559121888.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13559121887) 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 15 ways as a sum of consecutive naturals, for example, 72670 + ... + 179997.

It is an arithmetic number, because the mean of its divisors is an integer number (408564156).

Almost surely, 2^13559121888 is an apocalyptic number.

It is an amenable number.

13559121888 is an abundant number, since it is smaller than the sum of its proper divisors (25663037088).

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

13559121888 is a wasteful number, since it uses less digits than its factorization.

13559121888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252736 (or 252728 counting only the distinct ones).

The product of its digits is 691200, while the sum is 51.

The spelling of 13559121888 in words is "thirteen billion, five hundred fifty-nine million, one hundred twenty-one thousand, eight hundred eighty-eight".