280853822873 has 4 divisors (see below), whose sum is σ = 302457963108. Its totient is φ = 259249682640.

The previous prime is 280853822863. The next prime is 280853822903. The reversal of 280853822873 is 378228358082.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 168385481104 + 112468341769 = 410348^2 + 335363^2 .

It is not a de Polignac number, because 280853822873 - 2²⁸ = 280585387417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (280853822803) 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 in 3 ways as a sum of consecutive naturals, for example, 10802070098 + ... + 10802070123.

It is an arithmetic number, because the mean of its divisors is an integer number (75614490777).

Almost surely, 2^280853822873 is an apocalyptic number.

It is an amenable number.

280853822873 is a deficient number, since it is larger than the sum of its proper divisors (21604140235).

280853822873 is a wasteful number, since it uses less digits than its factorization.

280853822873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21604140234.

The product of its (nonzero) digits is 10321920, while the sum is 56.

The spelling of 280853822873 in words is "two hundred eighty billion, eight hundred fifty-three million, eight hundred twenty-two thousand, eight hundred seventy-three".