13545511511 has 4 divisors (see below), whose sum is σ = 15480584592. Its totient is φ = 11610438432.

The previous prime is 13545511459. The next prime is 13545511541. The reversal of 13545511511 is 11511554531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11511554531 = 271 ⋅42478061.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13545511511 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 (13545511541) 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, 967536530 + ... + 967536543.

It is an arithmetic number, because the mean of its divisors is an integer number (3870146148).

Almost surely, 2^13545511511 is an apocalyptic number.

13545511511 is a deficient number, since it is larger than the sum of its proper divisors (1935073081).

13545511511 is an equidigital number, since it uses as much as digits as its factorization.

13545511511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1935073080.

The product of its digits is 7500, while the sum is 32.

The spelling of 13545511511 in words is "thirteen billion, five hundred forty-five million, five hundred eleven thousand, five hundred eleven".