13505510011 has 4 divisors (see below), whose sum is σ = 15434868592. Its totient is φ = 11576151432.

The previous prime is 13505510009. The next prime is 13505510027. The reversal of 13505510011 is 11001550531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11001550531 = 191 ⋅57599741.

It is a cyclic number.

It is not a de Polignac number, because 13505510011 - 2¹ = 13505510009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13505510041) 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, 964679280 + ... + 964679293.

It is an arithmetic number, because the mean of its divisors is an integer number (3858717148).

Almost surely, 2^13505510011 is an apocalyptic number.

13505510011 is a deficient number, since it is larger than the sum of its proper divisors (1929358581).

13505510011 is an equidigital number, since it uses as much as digits as its factorization.

13505510011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1929358580.

The product of its (nonzero) digits is 375, while the sum is 22.

The spelling of 13505510011 in words is "thirteen billion, five hundred five million, five hundred ten thousand, eleven".