18135550360806 has 8 divisors (see below), whose sum is σ = 36271100721624. Its totient is φ = 6045183453600.

The previous prime is 18135550360789. The next prime is 18135550360847. The reversal of 18135550360806 is 60806305553181.

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

18135550360806 is an admirable number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1511295863395 + ... + 1511295863406.

It is an arithmetic number, because the mean of its divisors is an integer number (4533887590203).

Almost surely, 2^{18135550360806} is an apocalyptic number.

18135550360806 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18135550360806 is a wasteful number, since it uses less digits than its factorization.

18135550360806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3022591726806.

The product of its (nonzero) digits is 2592000, while the sum is 51.

The spelling of 18135550360806 in words is "eighteen trillion, one hundred thirty-five billion, five hundred fifty million, three hundred sixty thousand, eight hundred six".