280883040257 has 4 divisors (see below), whose sum is σ = 280957568580. Its totient is φ = 280808511936.

The previous prime is 280883040239. The next prime is 280883040281. The reversal of 280883040257 is 752040388082.

It is a Cunningham number, because it is equal to 728⁴+1.

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 232763791936 + 48119248321 = 482456^2 + 219361^2 .

It is a cyclic number.

It is not a de Polignac number, because 280883040257 - 2¹⁰ = 280883039233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (280883040287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37258508 + ... + 37266045.

It is an arithmetic number, because the mean of its divisors is an integer number (70239392145).

Almost surely, 2^280883040257 is an apocalyptic number.

It is an amenable number.

280883040257 is a deficient number, since it is larger than the sum of its proper divisors (74528323).

280883040257 is an equidigital number, since it uses as much as digits as its factorization.

280883040257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74528322.

The product of its (nonzero) digits is 860160, while the sum is 47.

The spelling of 280883040257 in words is "two hundred eighty billion, eight hundred eighty-three million, forty thousand, two hundred fifty-seven".