9856548782813 has 2 divisors, whose sum is σ = 9856548782814. Its totient is φ = 9856548782812.

The previous prime is 9856548782807. The next prime is 9856548782879. The reversal of 9856548782813 is 3182878456589.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8400826902724 + 1455721880089 = 2898418^2 + 1206533^2 .

It is a cyclic number.

It is not a de Polignac number, because 9856548782813 - 2⁴ = 9856548782797 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9856548782513) 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, 4928274391406 + 4928274391407.

It is an arithmetic number, because the mean of its divisors is an integer number (4928274391407).

Almost surely, 2^{9856548782813} is an apocalyptic number.

It is an amenable number.

9856548782813 is a deficient number, since it is larger than the sum of its proper divisors (1).

9856548782813 is an equidigital number, since it uses as much as digits as its factorization.

9856548782813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 928972800, while the sum is 74.

The spelling of 9856548782813 in words is "nine trillion, eight hundred fifty-six billion, five hundred forty-eight million, seven hundred eighty-two thousand, eight hundred thirteen".