280855008817 has 2 divisors, whose sum is σ = 280855008818. Its totient is φ = 280855008816.

The previous prime is 280855008809. The next prime is 280855008829. The reversal of 280855008817 is 718800558082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 206501171776 + 74353837041 = 454424^2 + 272679^2 .

It is a cyclic number.

It is not a de Polignac number, because 280855008817 - 2³ = 280855008809 is a prime.

It is not a weakly prime, because it can be changed into another prime (280855078817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140427504408 + 140427504409.

It is an arithmetic number, because the mean of its divisors is an integer number (140427504409).

Almost surely, 2^280855008817 is an apocalyptic number.

It is an amenable number.

280855008817 is a deficient number, since it is larger than the sum of its proper divisors (1).

280855008817 is an equidigital number, since it uses as much as digits as its factorization.

280855008817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1433600, while the sum is 52.

The spelling of 280855008817 in words is "two hundred eighty billion, eight hundred fifty-five million, eight thousand, eight hundred seventeen".