11328557503 has 4 divisors (see below), whose sum is σ = 11331239248. Its totient is φ = 11325875760.

The previous prime is 11328557501. The next prime is 11328557531. The reversal of 11328557503 is 30575582311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30575582311 = 179 ⋅170813309.

It is a cyclic number.

It is not a de Polignac number, because 11328557503 - 2¹ = 11328557501 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 (11328557501) 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, 1334526 + ... + 1342987.

It is an arithmetic number, because the mean of its divisors is an integer number (2832809812).

Almost surely, 2^11328557503 is an apocalyptic number.

11328557503 is a deficient number, since it is larger than the sum of its proper divisors (2681745).

11328557503 is an equidigital number, since it uses as much as digits as its factorization.

11328557503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2681744.

The product of its (nonzero) digits is 126000, while the sum is 40.

The spelling of 11328557503 in words is "eleven billion, three hundred twenty-eight million, five hundred fifty-seven thousand, five hundred three".