18318064855 has 16 divisors (see below), whose sum is σ = 22062922560. Its totient is φ = 14600363008.

The previous prime is 18318064847. The next prime is 18318064871. The reversal of 18318064855 is 55846081381.

It is a cyclic number.

It is not a de Polignac number, because 18318064855 - 2³ = 18318064847 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18318064799 and 18318064808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2419566 + ... + 2427124.

It is an arithmetic number, because the mean of its divisors is an integer number (1378932660).

Almost surely, 2^18318064855 is an apocalyptic number.

18318064855 is a deficient number, since it is larger than the sum of its proper divisors (3744857705).

18318064855 is a wasteful number, since it uses less digits than its factorization.

18318064855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9290.

The product of its (nonzero) digits is 921600, while the sum is 49.

The spelling of 18318064855 in words is "eighteen billion, three hundred eighteen million, sixty-four thousand, eight hundred fifty-five".