13509447055 has 16 divisors (see below), whose sum is σ = 17548836480. Its totient is φ = 9924507648.

The previous prime is 13509447053. The next prime is 13509447071. The reversal of 13509447055 is 55074490531.

It is a cyclic number.

It is not a de Polignac number, because 13509447055 - 2¹ = 13509447053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13509447053) 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, 525895 + ... + 550984.

It is an arithmetic number, because the mean of its divisors is an integer number (1096802280).

Almost surely, 2^13509447055 is an apocalyptic number.

13509447055 is a deficient number, since it is larger than the sum of its proper divisors (4039389425).

13509447055 is a wasteful number, since it uses less digits than its factorization.

13509447055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077090.

The product of its (nonzero) digits is 378000, while the sum is 43.

The spelling of 13509447055 in words is "thirteen billion, five hundred nine million, four hundred forty-seven thousand, fifty-five".