12721675723 has 2 divisors, whose sum is σ = 12721675724. Its totient is φ = 12721675722.

The previous prime is 12721675711. The next prime is 12721675727. The reversal of 12721675723 is 32757612721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12721675723 - 2²⁹ = 12184804811 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12721675723.

It is not a weakly prime, because it can be changed into another prime (12721675727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6360837861 + 6360837862.

It is an arithmetic number, because the mean of its divisors is an integer number (6360837862).

Almost surely, 2^12721675723 is an apocalyptic number.

12721675723 is a deficient number, since it is larger than the sum of its proper divisors (1).

12721675723 is an equidigital number, since it uses as much as digits as its factorization.

12721675723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 246960, while the sum is 43.

The spelling of 12721675723 in words is "twelve billion, seven hundred twenty-one million, six hundred seventy-five thousand, seven hundred twenty-three".