818047047408 has 80 divisors (see below), whose sum is σ = 2145692119296. Its totient is φ = 268504473600.

The previous prime is 818047047397. The next prime is 818047047439. The reversal of 818047047408 is 804740740818.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8154160 + ... + 8253872.

Almost surely, 2^818047047408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 818047047408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1072846059648).

818047047408 is an abundant number, since it is smaller than the sum of its proper divisors (1327645071888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

818047047408 is a wasteful number, since it uses less digits than its factorization.

818047047408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102342 (or 102336 counting only the distinct ones).

The product of its (nonzero) digits is 1605632, while the sum is 51.

The spelling of 818047047408 in words is "eight hundred eighteen billion, forty-seven million, forty-seven thousand, four hundred eight".