12357678593549 has 2 divisors, whose sum is σ = 12357678593550. Its totient is φ = 12357678593548.

The previous prime is 12357678593531. The next prime is 12357678593551. The reversal of 12357678593549 is 94539587675321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8989143276100 + 3368535317449 = 2998190^2 + 1835357^2 .

It is a cyclic number.

It is not a de Polignac number, because 12357678593549 - 2²⁰ = 12357677544973 is a prime.

Together with 12357678593551, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12357678590549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6178839296774 + 6178839296775.

It is an arithmetic number, because the mean of its divisors is an integer number (6178839296775).

Almost surely, 2^{12357678593549} is an apocalyptic number.

It is an amenable number.

12357678593549 is a deficient number, since it is larger than the sum of its proper divisors (1).

12357678593549 is an equidigital number, since it uses as much as digits as its factorization.

12357678593549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1714608000, while the sum is 74.

The spelling of 12357678593549 in words is "twelve trillion, three hundred fifty-seven billion, six hundred seventy-eight million, five hundred ninety-three thousand, five hundred forty-nine".