13520553511 has 4 divisors (see below), whose sum is σ = 13834985032. Its totient is φ = 13206121992.

The previous prime is 13520553481. The next prime is 13520553551. The reversal of 13520553511 is 11535502531.

13520553511 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13520553511 - 2⁷ = 13520553383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13520553551) 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 3 ways as a sum of consecutive naturals, for example, 157215696 + ... + 157215781.

It is an arithmetic number, because the mean of its divisors is an integer number (3458746258).

Almost surely, 2^13520553511 is an apocalyptic number.

13520553511 is a deficient number, since it is larger than the sum of its proper divisors (314431521).

13520553511 is an equidigital number, since it uses as much as digits as its factorization.

13520553511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314431520.

The product of its (nonzero) digits is 11250, while the sum is 31.

The spelling of 13520553511 in words is "thirteen billion, five hundred twenty million, five hundred fifty-three thousand, five hundred eleven".