12723344332721 has 8 divisors (see below), whose sum is σ = 13906551225504. Its totient is φ = 11544560644320.

The previous prime is 12723344332703. The next prime is 12723344332789.

12723344332721 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 12723344332721 - 2²² = 12723340138417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12723344338721) 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 7 ways as a sum of consecutive naturals, for example, 1105795076 + ... + 1105806581.

It is an arithmetic number, because the mean of its divisors is an integer number (1738318903188).

Almost surely, 2^{12723344332721} is an apocalyptic number.

12723344332721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12723344332721 is a deficient number, since it is larger than the sum of its proper divisors (1183206892783).

12723344332721 is a wasteful number, since it uses less digits than its factorization.

12723344332721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2211602191.

The product of its digits is 1016064, while the sum is 44.

The spelling of 12723344332721 in words is "twelve trillion, seven hundred twenty-three billion, three hundred forty-four million, three hundred thirty-two thousand, seven hundred twenty-one".