12723153691 has 2 divisors, whose sum is σ = 12723153692. Its totient is φ = 12723153690.

The previous prime is 12723153689. The next prime is 12723153757. The reversal of 12723153691 is 19635132721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12723153691 - 2¹ = 12723153689 is a prime.

Together with 12723153689, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12723153631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6361576845 + 6361576846.

It is an arithmetic number, because the mean of its divisors is an integer number (6361576846).

Almost surely, 2^12723153691 is an apocalyptic number.

12723153691 is a deficient number, since it is larger than the sum of its proper divisors (1).

12723153691 is an equidigital number, since it uses as much as digits as its factorization.

12723153691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 40.

The spelling of 12723153691 in words is "twelve billion, seven hundred twenty-three million, one hundred fifty-three thousand, six hundred ninety-one".