8506618218856 has 8 divisors (see below), whose sum is σ = 15949909160370. Its totient is φ = 4253309109424.

The previous prime is 8506618218841. The next prime is 8506618218887. The reversal of 8506618218856 is 6588128166058.

It can be written as a sum of positive squares in only one way, i.e., 8294342400100 + 212275818756 = 2879990^2 + 460734^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 531663638671 + ... + 531663638686.

Almost surely, 2^{8506618218856} is an apocalyptic number.

It is an amenable number.

8506618218856 is a deficient number, since it is larger than the sum of its proper divisors (7443290941514).

8506618218856 is a wasteful number, since it uses less digits than its factorization.

8506618218856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063327277363 (or 1063327277359 counting only the distinct ones).

The product of its (nonzero) digits is 44236800, while the sum is 64.

The spelling of 8506618218856 in words is "eight trillion, five hundred six billion, six hundred eighteen million, two hundred eighteen thousand, eight hundred fifty-six".