13255503511 has 4 divisors (see below), whose sum is σ = 13278477232. Its totient is φ = 13232529792.

The previous prime is 13255503493. The next prime is 13255503523. The reversal of 13255503511 is 11530555231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11530555231 = 13 ⋅886965787.

It is a cyclic number.

It is not a de Polignac number, because 13255503511 - 2¹⁹ = 13254979223 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 (13255503581) 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, 11485995 + ... + 11487148.

It is an arithmetic number, because the mean of its divisors is an integer number (3319619308).

Almost surely, 2^13255503511 is an apocalyptic number.

13255503511 is a deficient number, since it is larger than the sum of its proper divisors (22973721).

13255503511 is an equidigital number, since it uses as much as digits as its factorization.

13255503511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22973720.

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

The spelling of 13255503511 in words is "thirteen billion, two hundred fifty-five million, five hundred three thousand, five hundred eleven".