818182008840 has 128 divisors (see below), whose sum is σ = 2807190432000. Its totient is φ = 186880032768.

The previous prime is 818182008799. The next prime is 818182008841. The reversal of 818182008840 is 48800281818.

It is a self number, because there is not a number n which added to its sum of digits gives 818182008840.

It is not an unprimeable number, because it can be changed into a prime (818182008841) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 837916 + ... + 1529204.

It is an arithmetic number, because the mean of its divisors is an integer number (21931175250).

Almost surely, 2^818182008840 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 818182008840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1403595216000).

818182008840 is an abundant number, since it is smaller than the sum of its proper divisors (1989008423160).

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

818182008840 is a wasteful number, since it uses less digits than its factorization.

818182008840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692719 (or 692715 counting only the distinct ones).

The product of its (nonzero) digits is 262144, while the sum is 48.

The spelling of 818182008840 in words is "eight hundred eighteen billion, one hundred eighty-two million, eight thousand, eight hundred forty".