12161023680365 has 8 divisors (see below), whose sum is σ = 16677975333120. Its totient is φ = 8338987666512.

The previous prime is 12161023680361. The next prime is 12161023680373. The reversal of 12161023680365 is 56308632016121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12161023680365 - 2² = 12161023680361 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12161023680361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173728909685 + ... + 173728909754.

It is an arithmetic number, because the mean of its divisors is an integer number (2084746916640).

Almost surely, 2^{12161023680365} is an apocalyptic number.

It is an amenable number.

12161023680365 is a deficient number, since it is larger than the sum of its proper divisors (4516951652755).

12161023680365 is an equidigital number, since it uses as much as digits as its factorization.

12161023680365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347457819451.

The product of its (nonzero) digits is 311040, while the sum is 44.

Adding to 12161023680365 its reverse (56308632016121), we get a palindrome (68469655696486).

The spelling of 12161023680365 in words is "twelve trillion, one hundred sixty-one billion, twenty-three million, six hundred eighty thousand, three hundred sixty-five".