12357727709 has 2 divisors, whose sum is σ = 12357727710. Its totient is φ = 12357727708.

The previous prime is 12357727691. The next prime is 12357727727. The reversal of 12357727709 is 90772775321.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (12357727691) and next prime (12357727727).

It can be written as a sum of positive squares in only one way, i.e., 7145320900 + 5212406809 = 84530^2 + 72197^2 .

It is an emirp because it is prime and its reverse (90772775321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12357727709 - 2²⁸ = 12089292253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12357727729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6178863854 + 6178863855.

It is an arithmetic number, because the mean of its divisors is an integer number (6178863855).

Almost surely, 2^12357727709 is an apocalyptic number.

It is an amenable number.

12357727709 is a deficient number, since it is larger than the sum of its proper divisors (1).

12357727709 is an equidigital number, since it uses as much as digits as its factorization.

12357727709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296540, while the sum is 50.

The spelling of 12357727709 in words is "twelve billion, three hundred fifty-seven million, seven hundred twenty-seven thousand, seven hundred nine".