12865452563 has 2 divisors, whose sum is σ = 12865452564. Its totient is φ = 12865452562.

The previous prime is 12865452517. The next prime is 12865452629. The reversal of 12865452563 is 36525456821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12865452563 - 2¹⁴ = 12865436179 is a prime.

It is not a weakly prime, because it can be changed into another prime (12865458563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6432726281 + 6432726282.

It is an arithmetic number, because the mean of its divisors is an integer number (6432726282).

Almost surely, 2^12865452563 is an apocalyptic number.

12865452563 is a deficient number, since it is larger than the sum of its proper divisors (1).

12865452563 is an equidigital number, since it uses as much as digits as its factorization.

12865452563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728000, while the sum is 47.

The spelling of 12865452563 in words is "twelve billion, eight hundred sixty-five million, four hundred fifty-two thousand, five hundred sixty-three".