18016683016806 has 128 divisors (see below), whose sum is σ = 42236684582400. Its totient is φ = 5684876346240.

The previous prime is 18016683016769. The next prime is 18016683016861. The reversal of 18016683016806 is 60861038661081.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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 in 63 ways as a sum of consecutive naturals, for example, 16498060 + ... + 17556176.

It is an arithmetic number, because the mean of its divisors is an integer number (329974098300).

Almost surely, 2^{18016683016806} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18016683016806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21118342291200).

18016683016806 is an abundant number, since it is smaller than the sum of its proper divisors (24220001565594).

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

18016683016806 is a wasteful number, since it uses less digits than its factorization.

18016683016806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058371 (or 1058365 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The spelling of 18016683016806 in words is "eighteen trillion, sixteen billion, six hundred eighty-three million, sixteen thousand, eight hundred six".