280555864213 has 2 divisors, whose sum is σ = 280555864214. Its totient is φ = 280555864212.

The previous prime is 280555864181. The next prime is 280555864247. The reversal of 280555864213 is 312468555082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168171347569 + 112384516644 = 410087^2 + 335238^2 .

It is a cyclic number.

It is not a de Polignac number, because 280555864213 - 2⁵ = 280555864181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (280555864273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140277932106 + 140277932107.

It is an arithmetic number, because the mean of its divisors is an integer number (140277932107).

Almost surely, 2^280555864213 is an apocalyptic number.

It is an amenable number.

280555864213 is a deficient number, since it is larger than the sum of its proper divisors (1).

280555864213 is an equidigital number, since it uses as much as digits as its factorization.

280555864213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304000, while the sum is 49.

The spelling of 280555864213 in words is "two hundred eighty billion, five hundred fifty-five million, eight hundred sixty-four thousand, two hundred thirteen".