818312658867 has 12 divisors (see below), whose sum is σ = 1289462371704. Its totient is φ = 495947065920.

The previous prime is 818312658857. The next prime is 818312658907. The reversal of 818312658867 is 768856213818.

818312658867 is a `hidden beast` number, since 8 + 18 + 31 + 2 + 6 + 588 + 6 + 7 = 666.

It is not a de Polignac number, because 818312658867 - 2²⁷ = 818178441139 is a prime.

It is a super-2 number, since 2×818312658867² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (818312658827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4132892118 + ... + 4132892315.

It is an arithmetic number, because the mean of its divisors is an integer number (107455197642).

Almost surely, 2^818312658867 is an apocalyptic number.

818312658867 is a deficient number, since it is larger than the sum of its proper divisors (471149712837).

818312658867 is a wasteful number, since it uses less digits than its factorization.

818312658867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8265784450 (or 8265784447 counting only the distinct ones).

The product of its digits is 30965760, while the sum is 63.

The spelling of 818312658867 in words is "eight hundred eighteen billion, three hundred twelve million, six hundred fifty-eight thousand, eight hundred sixty-seven".