280855008818 has 16 divisors (see below), whose sum is σ = 432684063360. Its totient is φ = 136627260336.

The previous prime is 280855008817. The next prime is 280855008829. The reversal of 280855008818 is 818800558082.

It is a self number, because there is not a number n which added to its sum of digits gives 280855008818.

It is not an unprimeable number, because it can be changed into a prime (280855008817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2839073 + ... + 2936331.

It is an arithmetic number, because the mean of its divisors is an integer number (27042753960).

Almost surely, 2^280855008818 is an apocalyptic number.

280855008818 is a deficient number, since it is larger than the sum of its proper divisors (151829054542).

280855008818 is a wasteful number, since it uses less digits than its factorization.

280855008818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136321.

The product of its (nonzero) digits is 1638400, while the sum is 53.

The spelling of 280855008818 in words is "two hundred eighty billion, eight hundred fifty-five million, eight thousand, eight hundred eighteen".