13500550511 has 24 divisors (see below), whose sum is σ = 16415983584. Its totient is φ = 11049561600.

The previous prime is 13500550489. The next prime is 13500550523. The reversal of 13500550511 is 11505500531.

13500550511 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13500550511 - 2¹⁰ = 13500549487 is a prime.

It is a super-2 number, since 2×13500550511² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13500550711) 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, 658211 + ... + 678411.

It is an arithmetic number, because the mean of its divisors is an integer number (683999316).

Almost surely, 2^13500550511 is an apocalyptic number.

13500550511 is a deficient number, since it is larger than the sum of its proper divisors (2915433073).

13500550511 is a wasteful number, since it uses less digits than its factorization.

13500550511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20831 (or 20824 counting only the distinct ones).

The product of its (nonzero) digits is 1875, while the sum is 26.

The spelling of 13500550511 in words is "thirteen billion, five hundred million, five hundred fifty thousand, five hundred eleven".