818872278818 has 16 divisors (see below), whose sum is σ = 1339992521280. Its totient is φ = 372209199600.

The previous prime is 818872278803. The next prime is 818872278823.

818872278818 is nontrivially palindromic in base 10.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1517123 + ... + 1984793.

It is an arithmetic number, because the mean of its divisors is an integer number (83749532580).

Almost surely, 2^818872278818 is an apocalyptic number.

818872278818 is a deficient number, since it is larger than the sum of its proper divisors (521120242462).

818872278818 is a wasteful number, since it uses less digits than its factorization.

818872278818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547273.

The product of its digits is 51380224, while the sum is 68.

The spelling of 818872278818 in words is "eight hundred eighteen billion, eight hundred seventy-two million, two hundred seventy-eight thousand, eight hundred eighteen".