11818108503 has 12 divisors (see below), whose sum is σ = 17221669920. Its totient is φ = 7809014976.

The previous prime is 11818108483. The next prime is 11818108513. The reversal of 11818108503 is 30580181811.

It is a happy number.

It is not a de Polignac number, because 11818108503 - 2¹⁰ = 11818107479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11818108513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5809263 + ... + 5811296.

It is an arithmetic number, because the mean of its divisors is an integer number (1435139160).

Almost surely, 2^11818108503 is an apocalyptic number.

11818108503 is a deficient number, since it is larger than the sum of its proper divisors (5403561417).

11818108503 is a wasteful number, since it uses less digits than its factorization.

11818108503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11620678 (or 11620675 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 36.

The spelling of 11818108503 in words is "eleven billion, eight hundred eighteen million, one hundred eight thousand, five hundred three".