281880804421009 has 8 divisors (see below), whose sum is σ = 282334864444200. Its totient is φ = 281427013795200.

The previous prime is 281880804420959. The next prime is 281880804421031. The reversal of 281880804421009 is 900124408088182.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 96468246330625 + 185412558090384 = 9821825^2 + 13616628^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 281880804421009 - 2⁴⁵ = 246696432332177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (281880804421079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65254932 + ... + 69440389.

It is an arithmetic number, because the mean of its divisors is an integer number (35291858055525).

Almost surely, 2^{281880804421009} is an apocalyptic number.

It is an amenable number.

281880804421009 is a deficient number, since it is larger than the sum of its proper divisors (454060023191).

281880804421009 is a wasteful number, since it uses less digits than its factorization.

281880804421009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134698691.

The product of its (nonzero) digits is 2359296, while the sum is 55.

The spelling of 281880804421009 in words is "two hundred eighty-one trillion, eight hundred eighty billion, eight hundred four million, four hundred twenty-one thousand, nine".