28081471543 has 2 divisors, whose sum is σ = 28081471544. Its totient is φ = 28081471542.

The previous prime is 28081471541. The next prime is 28081471559. The reversal of 28081471543 is 34517418082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28081471543 - 2¹ = 28081471541 is a prime.

Together with 28081471541, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 28081471543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28081471541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14040735771 + 14040735772.

It is an arithmetic number, because the mean of its divisors is an integer number (14040735772).

Almost surely, 2^28081471543 is an apocalyptic number.

28081471543 is a deficient number, since it is larger than the sum of its proper divisors (1).

28081471543 is an equidigital number, since it uses as much as digits as its factorization.

28081471543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 215040, while the sum is 43.

The spelling of 28081471543 in words is "twenty-eight billion, eighty-one million, four hundred seventy-one thousand, five hundred forty-three".