12081603448681 has 16 divisors (see below), whose sum is σ = 13211147152000. Its totient is φ = 10981813759488.

The previous prime is 12081603448637. The next prime is 12081603448721. The reversal of 12081603448681 is 18684430618021.

It is not a de Polignac number, because 12081603448681 - 2⁹ = 12081603448169 is a prime.

It is a super-2 number, since 2×12081603448681² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12081603488681) 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 15 ways as a sum of consecutive naturals, for example, 23821851 + ... + 24323728.

It is an arithmetic number, because the mean of its divisors is an integer number (825696697000).

Almost surely, 2^{12081603448681} is an apocalyptic number.

It is an amenable number.

12081603448681 is a deficient number, since it is larger than the sum of its proper divisors (1129543703319).

12081603448681 is a wasteful number, since it uses less digits than its factorization.

12081603448681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48145888.

The product of its (nonzero) digits is 1769472, while the sum is 52.

The spelling of 12081603448681 in words is "twelve trillion, eighty-one billion, six hundred three million, four hundred forty-eight thousand, six hundred eighty-one".