818273243366 has 16 divisors (see below), whose sum is σ = 1308332671200. Its totient is φ = 382485398400.

The previous prime is 818273243353. The next prime is 818273243369. The reversal of 818273243366 is 663342372818.

It is a happy number.

818273243366 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×818273243366² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818273243369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80756210 + ... + 80766341.

It is an arithmetic number, because the mean of its divisors is an integer number (81770791950).

Almost surely, 2^818273243366 is an apocalyptic number.

818273243366 is a deficient number, since it is larger than the sum of its proper divisors (490059427834).

818273243366 is a wasteful number, since it uses less digits than its factorization.

818273243366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161522719.

The product of its digits is 6967296, while the sum is 53.

The spelling of 818273243366 in words is "eight hundred eighteen billion, two hundred seventy-three million, two hundred forty-three thousand, three hundred sixty-six".