8123663218 has 16 divisors (see below), whose sum is σ = 13992913440. Its totient is φ = 3498228000.

The previous prime is 8123663189. The next prime is 8123663221.

8123663218 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×8123663218² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9716883 + ... + 9717718.

It is an arithmetic number, because the mean of its divisors is an integer number (874557090).

Almost surely, 2^8123663218 is an apocalyptic number.

8123663218 is a deficient number, since it is larger than the sum of its proper divisors (5869250222).

8123663218 is a wasteful number, since it uses less digits than its factorization.

8123663218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19434633.

The product of its digits is 82944, while the sum is 40.

The square root of 8123663218 is about 90131.3664492001. The cubic root of 8123663218 is about 2010.2526202460.

The spelling of 8123663218 in words is "eight billion, one hundred twenty-three million, six hundred sixty-three thousand, two hundred eighteen".