13505055556 has 12 divisors (see below), whose sum is σ = 23635488492. Its totient is φ = 6752058848.

The previous prime is 13505055539. The next prime is 13505055601. The reversal of 13505055556 is 65555050531.

13505055556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 7635963456 + 5869092100 = 87384^2 + 76610^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 47875 + ... + 171178.

It is an arithmetic number, because the mean of its divisors is an integer number (1969624041).

Almost surely, 2^13505055556 is an apocalyptic number.

It is an amenable number.

13505055556 is a deficient number, since it is larger than the sum of its proper divisors (10130432936).

13505055556 is a wasteful number, since it uses less digits than its factorization.

13505055556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234470 (or 234468 counting only the distinct ones).

The product of its (nonzero) digits is 281250, while the sum is 40.

The spelling of 13505055556 in words is "thirteen billion, five hundred five million, fifty-five thousand, five hundred fifty-six".