12723773455563 has 16 divisors (see below), whose sum is σ = 16970996016000. Its totient is φ = 8479533583040.

The previous prime is 12723773455511. The next prime is 12723773455579. The reversal of 12723773455563 is 36555437732721.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12723773455563 - 2¹⁸ = 12723773193419 is a prime.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 12723773455497 and 12723773455506.

It is not an unprimeable number, because it can be changed into a prime (12723773455763) 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, 243449128 + ... + 243501386.

It is an arithmetic number, because the mean of its divisors is an integer number (1060687251000).

Almost surely, 2^{12723773455563} is an apocalyptic number.

12723773455563 is a deficient number, since it is larger than the sum of its proper divisors (4247222560437).

12723773455563 is a wasteful number, since it uses less digits than its factorization.

12723773455563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79242.

The product of its digits is 111132000, while the sum is 60.

The spelling of 12723773455563 in words is "twelve trillion, seven hundred twenty-three billion, seven hundred seventy-three million, four hundred fifty-five thousand, five hundred sixty-three".