11541500503 has 4 divisors (see below), whose sum is σ = 12429308248. Its totient is φ = 10653692760.

The previous prime is 11541500491. The next prime is 11541500507. The reversal of 11541500503 is 30500514511.

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: 30500514511 = 1069 ⋅28531819.

It is a cyclic number.

It is not a de Polignac number, because 11541500503 - 2⁵ = 11541500471 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 (11541500507) 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, 443903853 + ... + 443903878.

It is an arithmetic number, because the mean of its divisors is an integer number (3107327062).

Almost surely, 2^11541500503 is an apocalyptic number.

11541500503 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11541500503 is a deficient number, since it is larger than the sum of its proper divisors (887807745).

11541500503 is an equidigital number, since it uses as much as digits as its factorization.

11541500503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887807744.

The product of its (nonzero) digits is 1500, while the sum is 25.

The spelling of 11541500503 in words is "eleven billion, five hundred forty-one million, five hundred thousand, five hundred three".