13520545211 has 4 divisors (see below), whose sum is σ = 13539833424. Its totient is φ = 13501257000.

The previous prime is 13520545201. The next prime is 13520545243. The reversal of 13520545211 is 11254502531.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13520545211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13520545201) 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 3 ways as a sum of consecutive naturals, for example, 9643055 + ... + 9644456.

It is an arithmetic number, because the mean of its divisors is an integer number (3384958356).

Almost surely, 2^13520545211 is an apocalyptic number.

13520545211 is a deficient number, since it is larger than the sum of its proper divisors (19288213).

13520545211 is an equidigital number, since it uses as much as digits as its factorization.

13520545211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19288212.

The product of its (nonzero) digits is 6000, while the sum is 29.

The spelling of 13520545211 in words is "thirteen billion, five hundred twenty million, five hundred forty-five thousand, two hundred eleven".