12144648312721 has 16 divisors (see below), whose sum is σ = 12793989182400. Its totient is φ = 11496325595328.

The previous prime is 12144648312701. The next prime is 12144648312733. The reversal of 12144648312721 is 12721384644121.

It is a cyclic number.

It is not a de Polignac number, because 12144648312721 - 2¹¹ = 12144648310673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12144648312701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143073190 + ... + 143158048.

It is an arithmetic number, because the mean of its divisors is an integer number (799624323900).

Almost surely, 2^{12144648312721} is an apocalyptic number.

It is an amenable number.

12144648312721 is a deficient number, since it is larger than the sum of its proper divisors (649340869679).

12144648312721 is a wasteful number, since it uses less digits than its factorization.

12144648312721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90768.

The product of its digits is 516096, while the sum is 46.

The spelling of 12144648312721 in words is "twelve trillion, one hundred forty-four billion, six hundred forty-eight million, three hundred twelve thousand, seven hundred twenty-one".