8442781048543 has 2 divisors, whose sum is σ = 8442781048544. Its totient is φ = 8442781048542.

The previous prime is 8442781048511. The next prime is 8442781048573. The reversal of 8442781048543 is 3458401872448.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8442781048543 - 2⁵ = 8442781048511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8442781048573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4221390524271 + 4221390524272.

It is an arithmetic number, because the mean of its divisors is an integer number (4221390524272).

Almost surely, 2^{8442781048543} is an apocalyptic number.

8442781048543 is a deficient number, since it is larger than the sum of its proper divisors (1).

8442781048543 is an equidigital number, since it uses as much as digits as its factorization.

8442781048543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27525120, while the sum is 58.

The spelling of 8442781048543 in words is "eight trillion, four hundred forty-two billion, seven hundred eighty-one million, forty-eight thousand, five hundred forty-three".