12723818775 has 24 divisors (see below), whose sum is σ = 21047283840. Its totient is φ = 6782627040.

The previous prime is 12723818771. The next prime is 12723818819. The reversal of 12723818775 is 57781832721.

It is a happy number.

12723818775 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12723818775 - 2² = 12723818771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12723818771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111324 + ... + 194526.

It is an arithmetic number, because the mean of its divisors is an integer number (876970160).

Almost surely, 2^12723818775 is an apocalyptic number.

12723818775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12723818775 is a deficient number, since it is larger than the sum of its proper divisors (8323465065).

12723818775 is a wasteful number, since it uses less digits than its factorization.

12723818775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85255 (or 85250 counting only the distinct ones).

The product of its digits is 1317120, while the sum is 51.

The spelling of 12723818775 in words is "twelve billion, seven hundred twenty-three million, eight hundred eighteen thousand, seven hundred seventy-five".