818286682818 has 48 divisors (see below), whose sum is σ = 1904694553440. Its totient is φ = 233379442560.

The previous prime is 818286682753. The next prime is 818286682861.

818286682818 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×818286682818² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33138148 + ... + 33162831.

It is an arithmetic number, because the mean of its divisors is an integer number (39681136530).

Almost surely, 2^818286682818 is an apocalyptic number.

818286682818 is an abundant number, since it is smaller than the sum of its proper divisors (1086407870622).

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

818286682818 is a wasteful number, since it uses less digits than its factorization.

818286682818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66301023 (or 66301012 counting only the distinct ones).

The product of its digits is 37748736, while the sum is 66.

The spelling of 818286682818 in words is "eight hundred eighteen billion, two hundred eighty-six million, six hundred eighty-two thousand, eight hundred eighteen".