12420260156567 has 2 divisors, whose sum is σ = 12420260156568. Its totient is φ = 12420260156566.

The previous prime is 12420260156543. The next prime is 12420260156581. The reversal of 12420260156567 is 76565106202421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12420260156567 - 2⁶ = 12420260156503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12420260156527) 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, 6210130078283 + 6210130078284.

It is an arithmetic number, because the mean of its divisors is an integer number (6210130078284).

Almost surely, 2^{12420260156567} is an apocalyptic number.

12420260156567 is a deficient number, since it is larger than the sum of its proper divisors (1).

12420260156567 is an equidigital number, since it uses as much as digits as its factorization.

12420260156567 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1209600, while the sum is 47.

Adding to 12420260156567 its reverse (76565106202421), we get a palindrome (88985366358988).

The spelling of 12420260156567 in words is "twelve trillion, four hundred twenty billion, two hundred sixty million, one hundred fifty-six thousand, five hundred sixty-seven".