281053856543 has 2 divisors, whose sum is σ = 281053856544. Its totient is φ = 281053856542.

The previous prime is 281053856467. The next prime is 281053856563. The reversal of 281053856543 is 345658350182.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 281053856543 - 2¹⁰ = 281053855519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 281053856491 and 281053856500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (281053856563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140526928271 + 140526928272.

It is an arithmetic number, because the mean of its divisors is an integer number (140526928272).

Almost surely, 2^281053856543 is an apocalyptic number.

281053856543 is a deficient number, since it is larger than the sum of its proper divisors (1).

281053856543 is an equidigital number, since it uses as much as digits as its factorization.

281053856543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456000, while the sum is 50.

The spelling of 281053856543 in words is "two hundred eighty-one billion, fifty-three million, eight hundred fifty-six thousand, five hundred forty-three".