11505463505 has 4 divisors (see below), whose sum is σ = 13806556212. Its totient is φ = 9204370800.

The previous prime is 11505463421. The next prime is 11505463511. The reversal of 11505463505 is 50536450511.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1989070801 + 9516392704 = 44599^2 + 97552^2 .

It is not a de Polignac number, because 11505463505 - 2²⁴ = 11488686289 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1150546346 + ... + 1150546355.

It is an arithmetic number, because the mean of its divisors is an integer number (3451639053).

Almost surely, 2^11505463505 is an apocalyptic number.

It is an amenable number.

11505463505 is a deficient number, since it is larger than the sum of its proper divisors (2301092707).

11505463505 is an equidigital number, since it uses as much as digits as its factorization.

11505463505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2301092706.

The product of its (nonzero) digits is 45000, while the sum is 35.

The spelling of 11505463505 in words is "eleven billion, five hundred five million, four hundred sixty-three thousand, five hundred five".