818782807444 has 48 divisors (see below), whose sum is σ = 1644181475328. Its totient is φ = 349490491488.

The previous prime is 818782807441. The next prime is 818782807463. The reversal of 818782807444 is 444708287818.

It is a super-3 number, since 3×818782807444³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818782807441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16322169 + ... + 16372255.

It is an arithmetic number, because the mean of its divisors is an integer number (34253780736).

Almost surely, 2^818782807444 is an apocalyptic number.

It is an amenable number.

818782807444 is an abundant number, since it is smaller than the sum of its proper divisors (825398667884).

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

818782807444 is a wasteful number, since it uses less digits than its factorization.

818782807444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52444 (or 52442 counting only the distinct ones).

The product of its (nonzero) digits is 25690112, while the sum is 61.

The spelling of 818782807444 in words is "eight hundred eighteen billion, seven hundred eighty-two million, eight hundred seven thousand, four hundred forty-four".