43281861473 has 2 divisors, whose sum is σ = 43281861474. Its totient is φ = 43281861472.

The previous prime is 43281861461. The next prime is 43281861479. The reversal of 43281861473 is 37416818234.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43235716624 + 46144849 = 207932^2 + 6793^2 .

It is a cyclic number.

It is not a de Polignac number, because 43281861473 - 2³⁴ = 26101992289 is a prime.

It is not a weakly prime, because it can be changed into another prime (43281861479) 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, 21640930736 + 21640930737.

It is an arithmetic number, because the mean of its divisors is an integer number (21640930737).

Almost surely, 2^43281861473 is an apocalyptic number.

It is an amenable number.

43281861473 is a deficient number, since it is larger than the sum of its proper divisors (1).

43281861473 is an equidigital number, since it uses as much as digits as its factorization.

43281861473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 774144, while the sum is 47.

The spelling of 43281861473 in words is "forty-three billion, two hundred eighty-one million, eight hundred sixty-one thousand, four hundred seventy-three".