12161685814 has 4 divisors (see below), whose sum is σ = 18242528724. Its totient is φ = 6080842906.

The previous prime is 12161685797. The next prime is 12161685817. The reversal of 12161685814 is 41858616121.

12161685814 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12161685817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3040421452 + ... + 3040421455.

It is an arithmetic number, because the mean of its divisors is an integer number (4560632181).

Almost surely, 2^12161685814 is an apocalyptic number.

12161685814 is a deficient number, since it is larger than the sum of its proper divisors (6080842910).

12161685814 is an equidigital number, since it uses as much as digits as its factorization.

12161685814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6080842909.

The product of its digits is 92160, while the sum is 43.

The spelling of 12161685814 in words is "twelve billion, one hundred sixty-one million, six hundred eighty-five thousand, eight hundred fourteen".