11711038503 has 4 divisors (see below), whose sum is σ = 15614718008. Its totient is φ = 7807359000.

The previous prime is 11711038499. The next prime is 11711038529. The reversal of 11711038503 is 30583011711.

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

It is not a de Polignac number, because 11711038503 - 2² = 11711038499 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 (11711038543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1951839748 + ... + 1951839753.

It is an arithmetic number, because the mean of its divisors is an integer number (3903679502).

Almost surely, 2^11711038503 is an apocalyptic number.

11711038503 is a deficient number, since it is larger than the sum of its proper divisors (3903679505).

11711038503 is an equidigital number, since it uses as much as digits as its factorization.

11711038503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3903679504.

The product of its (nonzero) digits is 2520, while the sum is 30.

The spelling of 11711038503 in words is "eleven billion, seven hundred eleven million, thirty-eight thousand, five hundred three".