12117503999 has 4 divisors (see below), whose sum is σ = 12118127280. Its totient is φ = 12116880720.

The previous prime is 12117503971. The next prime is 12117504013. The reversal of 12117503999 is 99930571121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12117503999 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 (12117503399) 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, 281507 + ... + 321684.

It is an arithmetic number, because the mean of its divisors is an integer number (3029531820).

Almost surely, 2^12117503999 is an apocalyptic number.

12117503999 is a deficient number, since it is larger than the sum of its proper divisors (623281).

12117503999 is an equidigital number, since it uses as much as digits as its factorization.

12117503999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623280.

The product of its (nonzero) digits is 153090, while the sum is 47.

The spelling of 12117503999 in words is "twelve billion, one hundred seventeen million, five hundred three thousand, nine hundred ninety-nine".