12456717522467 has 2 divisors, whose sum is σ = 12456717522468. Its totient is φ = 12456717522466.

The previous prime is 12456717522421. The next prime is 12456717522493. The reversal of 12456717522467 is 76422571765421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12456717522467 - 2²⁰ = 12456716473891 is a prime.

It is a super-2 number, since 2×12456717522467² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12456717521467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6228358761233 + 6228358761234.

It is an arithmetic number, because the mean of its divisors is an integer number (6228358761234).

Almost surely, 2^{12456717522467} is an apocalyptic number.

12456717522467 is a deficient number, since it is larger than the sum of its proper divisors (1).

12456717522467 is an equidigital number, since it uses as much as digits as its factorization.

12456717522467 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39513600, while the sum is 59.

The spelling of 12456717522467 in words is "twelve trillion, four hundred fifty-six billion, seven hundred seventeen million, five hundred twenty-two thousand, four hundred sixty-seven".