18135469855 has 8 divisors (see below), whose sum is σ = 22131421200. Its totient is φ = 14262470976.

The previous prime is 18135469843. The next prime is 18135469861. The reversal of 18135469855 is 55896453181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18135469855 - 2¹⁵ = 18135437087 is a prime.

It is a super-2 number, since 2×18135469855² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18135469796 and 18135469805.

It is a congruent number.

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, 30737790 + ... + 30738379.

It is an arithmetic number, because the mean of its divisors is an integer number (2766427650).

Almost surely, 2^18135469855 is an apocalyptic number.

18135469855 is a deficient number, since it is larger than the sum of its proper divisors (3995951345).

18135469855 is an equidigital number, since it uses as much as digits as its factorization.

18135469855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61476233.

The product of its digits is 5184000, while the sum is 55.

The spelling of 18135469855 in words is "eighteen billion, one hundred thirty-five million, four hundred sixty-nine thousand, eight hundred fifty-five".