18366833550055 has 8 divisors (see below), whose sum is σ = 22041268171344. Its totient is φ = 14692754899200.

The previous prime is 18366833550047. The next prime is 18366833550059. The reversal of 18366833550055 is 55005533866381.

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

It is not a de Polignac number, because 18366833550055 - 2³ = 18366833550047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18366833550059) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 88879081 + ... + 89085490.

It is an arithmetic number, because the mean of its divisors is an integer number (2755158521418).

Almost surely, 2^{18366833550055} is an apocalyptic number.

18366833550055 is a deficient number, since it is larger than the sum of its proper divisors (3674434621289).

18366833550055 is a wasteful number, since it uses less digits than its factorization.

18366833550055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177985217.

The product of its (nonzero) digits is 38880000, while the sum is 58.

The spelling of 18366833550055 in words is "eighteen trillion, three hundred sixty-six billion, eight hundred thirty-three million, five hundred fifty thousand, fifty-five".