12805382802547 has 2 divisors, whose sum is σ = 12805382802548. Its totient is φ = 12805382802546.

The previous prime is 12805382802539. The next prime is 12805382802601. The reversal of 12805382802547 is 74520828350821.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12805382802547 - 2³ = 12805382802539 is a prime.

It is not a weakly prime, because it can be changed into another prime (12805386802547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6402691401273 + 6402691401274.

It is an arithmetic number, because the mean of its divisors is an integer number (6402691401274).

Almost surely, 2^{12805382802547} is an apocalyptic number.

12805382802547 is a deficient number, since it is larger than the sum of its proper divisors (1).

12805382802547 is an equidigital number, since it uses as much as digits as its factorization.

12805382802547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8601600, while the sum is 55.

The spelling of 12805382802547 in words is "twelve trillion, eight hundred five billion, three hundred eighty-two million, eight hundred two thousand, five hundred forty-seven".