12723445177 has 2 divisors, whose sum is σ = 12723445178. Its totient is φ = 12723445176.

The previous prime is 12723445127. The next prime is 12723445199. The reversal of 12723445177 is 77154432721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12647476521 + 75968656 = 112461^2 + 8716^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12723445177 is a prime.

It is a super-2 number, since 2×12723445177² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12723445117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6361722588 + 6361722589.

It is an arithmetic number, because the mean of its divisors is an integer number (6361722589).

Almost surely, 2^12723445177 is an apocalyptic number.

It is an amenable number.

12723445177 is a deficient number, since it is larger than the sum of its proper divisors (1).

12723445177 is an equidigital number, since it uses as much as digits as its factorization.

12723445177 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 329280, while the sum is 43.

Adding to 12723445177 its reverse (77154432721), we get a palindrome (89877877898).

The spelling of 12723445177 in words is "twelve billion, seven hundred twenty-three million, four hundred forty-five thousand, one hundred seventy-seven".