12564276552523 has 2 divisors, whose sum is σ = 12564276552524. Its totient is φ = 12564276552522.

The previous prime is 12564276552449. The next prime is 12564276552533. The reversal of 12564276552523 is 32525567246521.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12564276552523 - 2²⁵ = 12564242998091 is a prime.

It is a super-2 number, since 2×12564276552523² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12564276552533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6282138276261 + 6282138276262.

It is an arithmetic number, because the mean of its divisors is an integer number (6282138276262).

Almost surely, 2^{12564276552523} is an apocalyptic number.

12564276552523 is a deficient number, since it is larger than the sum of its proper divisors (1).

12564276552523 is an equidigital number, since it uses as much as digits as its factorization.

12564276552523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240000, while the sum is 55.

The spelling of 12564276552523 in words is "twelve trillion, five hundred sixty-four billion, two hundred seventy-six million, five hundred fifty-two thousand, five hundred twenty-three".