12727455123157 has 2 divisors, whose sum is σ = 12727455123158. Its totient is φ = 12727455123156.

The previous prime is 12727455123139. The next prime is 12727455123167. The reversal of 12727455123157 is 75132155472721.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6889790275281 + 5837664847876 = 2624841^2 + 2416126^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12727455123157 is a prime.

It is a super-2 number, since 2×12727455123157² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12727455123167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6363727561578 + 6363727561579.

It is an arithmetic number, because the mean of its divisors is an integer number (6363727561579).

Almost surely, 2^{12727455123157} is an apocalyptic number.

It is an amenable number.

12727455123157 is a deficient number, since it is larger than the sum of its proper divisors (1).

12727455123157 is an equidigital number, since it uses as much as digits as its factorization.

12727455123157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4116000, while the sum is 52.

The spelling of 12727455123157 in words is "twelve trillion, seven hundred twenty-seven billion, four hundred fifty-five million, one hundred twenty-three thousand, one hundred fifty-seven".