12817555200563 has 4 divisors (see below), whose sum is σ = 12830208266928. Its totient is φ = 12804902134200.

The previous prime is 12817555200557. The next prime is 12817555200649. The reversal of 12817555200563 is 36500255571821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12817555200563 - 2¹⁶ = 12817555135027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12817555200553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6326531663 + ... + 6326533688.

It is an arithmetic number, because the mean of its divisors is an integer number (3207552066732).

Almost surely, 2^{12817555200563} is an apocalyptic number.

12817555200563 is a deficient number, since it is larger than the sum of its proper divisors (12653066365).

12817555200563 is a wasteful number, since it uses less digits than its factorization.

12817555200563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12653066364.

The product of its (nonzero) digits is 2520000, while the sum is 50.

The spelling of 12817555200563 in words is "twelve trillion, eight hundred seventeen billion, five hundred fifty-five million, two hundred thousand, five hundred sixty-three".