18000000000002 has 8 divisors (see below), whose sum is σ = 27000028399356. Its totient is φ = 8999990533552.

The previous prime is 18000000000001. The next prime is 18000000000023. The reversal of 18000000000002 is 20000000000081.

It can be written as a sum of positive squares in 2 ways, for example, as 17951313136201 + 48686863801 = 4236899^2 + 220651^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 17999999999893 and 17999999999902.

It is not an unprimeable number, because it can be changed into a prime (18000000000001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2052833 + ... + 6341460.

Almost surely, 2^{18000000000002} is an apocalyptic number.

18000000000002 is a deficient number, since it is larger than the sum of its proper divisors (9000028399354).

18000000000002 is a wasteful number, since it uses less digits than its factorization.

18000000000002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9466452.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 18000000000002 its reverse (20000000000081), we get a palindrome (38000000000083).

The spelling of 18000000000002 in words is "eighteen trillion, two", and thus it is an aban number and an uban number.