812204402218 has 8 divisors (see below), whose sum is σ = 1329061749120. Its totient is φ = 369183819180.

The previous prime is 812204402213. The next prime is 812204402221.

812204402218 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (812204402213) 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, 18459190938 + ... + 18459190981.

It is an arithmetic number, because the mean of its divisors is an integer number (166132718640).

Almost surely, 2^812204402218 is an apocalyptic number.

812204402218 is a deficient number, since it is larger than the sum of its proper divisors (516857346902).

812204402218 is a wasteful number, since it uses less digits than its factorization.

812204402218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36918381932.

The product of its (nonzero) digits is 16384, while the sum is 34.

The spelling of 812204402218 in words is "eight hundred twelve billion, two hundred four million, four hundred two thousand, two hundred eighteen".