12111716565716 has 12 divisors (see below), whose sum is σ = 21205231175520. Its totient is φ = 6053079087000.

The previous prime is 12111716565713. The next prime is 12111716565731. The reversal of 12111716565716 is 61756561711121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111716565713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 694789160 + ... + 694806591.

It is an arithmetic number, because the mean of its divisors is an integer number (1767102597960).

Almost surely, 2^{12111716565716} is an apocalyptic number.

It is an amenable number.

12111716565716 is a deficient number, since it is larger than the sum of its proper divisors (9093514609804).

12111716565716 is a wasteful number, since it uses less digits than its factorization.

12111716565716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1389597934 (or 1389597932 counting only the distinct ones).

The product of its digits is 529200, while the sum is 50.

The spelling of 12111716565716 in words is "twelve trillion, one hundred eleven billion, seven hundred sixteen million, five hundred sixty-five thousand, seven hundred sixteen".