12111716565712 has 20 divisors (see below), whose sum is σ = 23470102274656. Its totient is φ = 6054915978720.

The previous prime is 12111716565679. The next prime is 12111716565713. The reversal of 12111716565712 is 21756561711121.

It is a super-2 number, since 2×12111716565712² (a number of 27 digits) contains 22 as substring.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58787964 + ... + 58993627.

Almost surely, 2^{12111716565712} is an apocalyptic number.

It is an amenable number.

12111716565712 is a deficient number, since it is larger than the sum of its proper divisors (11358385708944).

12111716565712 is a wasteful number, since it uses less digits than its factorization.

12111716565712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117788026 (or 117788020 counting only the distinct ones).

The product of its digits is 176400, while the sum is 46.

The spelling of 12111716565712 in words is "twelve trillion, one hundred eleven billion, seven hundred sixteen million, five hundred sixty-five thousand, seven hundred twelve".