2802783809281 has 2 divisors, whose sum is σ = 2802783809282. Its totient is φ = 2802783809280.

The previous prime is 2802783809219. The next prime is 2802783809291. The reversal of 2802783809281 is 1829083872082.

2802783809281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2724430842225 + 78352967056 = 1650585^2 + 279916^2 .

It is a cyclic number.

It is not a de Polignac number, because 2802783809281 - 2¹⁷ = 2802783678209 is a prime.

It is a super-2 number, since 2×2802783809281² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2802783809291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1401391904640 + 1401391904641.

It is an arithmetic number, because the mean of its divisors is an integer number (1401391904641).

Almost surely, 2^{2802783809281} is an apocalyptic number.

It is an amenable number.

2802783809281 is a deficient number, since it is larger than the sum of its proper divisors (1).

2802783809281 is an equidigital number, since it uses as much as digits as its factorization.

2802783809281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6193152, while the sum is 58.

The spelling of 2802783809281 in words is "two trillion, eight hundred two billion, seven hundred eighty-three million, eight hundred nine thousand, two hundred eighty-one".