12116555517 has 16 divisors (see below), whose sum is σ = 17660897280. Its totient is φ = 7328026800.

The previous prime is 12116555513. The next prime is 12116555587. The reversal of 12116555517 is 71555561121.

It is a happy number.

It is not a de Polignac number, because 12116555517 - 2² = 12116555513 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12116555513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 367459 + ... + 399072.

It is an arithmetic number, because the mean of its divisors is an integer number (1103806080).

Almost surely, 2^12116555517 is an apocalyptic number.

It is an amenable number.

12116555517 is a deficient number, since it is larger than the sum of its proper divisors (5544341763).

12116555517 is a wasteful number, since it uses less digits than its factorization.

12116555517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767024.

The product of its digits is 52500, while the sum is 39.

The spelling of 12116555517 in words is "twelve billion, one hundred sixteen million, five hundred fifty-five thousand, five hundred seventeen".