13530135511 has 4 divisors (see below), whose sum is σ = 13530371800. Its totient is φ = 13529899224.

The previous prime is 13530135449. The next prime is 13530135539. The reversal of 13530135511 is 11553103531.

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 13530135511 - 2⁷ = 13530135383 is a prime.

It is a super-2 number, since 2×13530135511² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13530135511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13530135611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28045 + ... + 166873.

It is an arithmetic number, because the mean of its divisors is an integer number (3382592950).

Almost surely, 2^13530135511 is an apocalyptic number.

13530135511 is a deficient number, since it is larger than the sum of its proper divisors (236289).

13530135511 is an equidigital number, since it uses as much as digits as its factorization.

13530135511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236288.

The product of its (nonzero) digits is 3375, while the sum is 28.

The spelling of 13530135511 in words is "thirteen billion, five hundred thirty million, one hundred thirty-five thousand, five hundred eleven".