8218812699999 has 12 divisors (see below), whose sum is σ = 12950856375912. Its totient is φ = 4981098606000.

The previous prime is 8218812699991. The next prime is 8218812700003. The reversal of 8218812699999 is 9999962188128.

8218812699999 is a `hidden beast` number, since 8 + 2 + 188 + 1 + 269 + 99 + 99 = 666.

It is not a de Polignac number, because 8218812699999 - 2³ = 8218812699991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8218812699991) 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, 41509154952 + ... + 41509155149.

It is an arithmetic number, because the mean of its divisors is an integer number (1079238031326).

Almost surely, 2^{8218812699999} is an apocalyptic number.

8218812699999 is a deficient number, since it is larger than the sum of its proper divisors (4732043675913).

8218812699999 is a wasteful number, since it uses less digits than its factorization.

8218812699999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83018310118 (or 83018310115 counting only the distinct ones).

The product of its digits is 725594112, while the sum is 81.

The spelling of 8218812699999 in words is "eight trillion, two hundred eighteen billion, eight hundred twelve million, six hundred ninety-nine thousand, nine hundred ninety-nine".