1217255360567 has 2 divisors, whose sum is σ = 1217255360568. Its totient is φ = 1217255360566.

The previous prime is 1217255360491. The next prime is 1217255360597. The reversal of 1217255360567 is 7650635527121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1217255360567 - 2⁸ = 1217255360311 is a prime.

It is a super-2 number, since 2×1217255360567² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1217255360597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608627680283 + 608627680284.

It is an arithmetic number, because the mean of its divisors is an integer number (608627680284).

Almost surely, 2^{1217255360567} is an apocalyptic number.

1217255360567 is a deficient number, since it is larger than the sum of its proper divisors (1).

1217255360567 is an equidigital number, since it uses as much as digits as its factorization.

1217255360567 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2646000, while the sum is 50.

The spelling of 1217255360567 in words is "one trillion, two hundred seventeen billion, two hundred fifty-five million, three hundred sixty thousand, five hundred sixty-seven".