18011075555502 has 64 divisors (see below), whose sum is σ = 40085722494720. Its totient is φ = 5994529869600.

The previous prime is 18011075555497. The next prime is 18011075555521. The reversal of 18011075555502 is 20555557011081.

18011075555502 is a `hidden beast` number, since 1 + 80 + 1 + 10 + 7 + 5 + 5 + 5 + 550 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 147615573 + ... + 147737535.

It is an arithmetic number, because the mean of its divisors is an integer number (626339413980).

Almost surely, 2^{18011075555502} is an apocalyptic number.

18011075555502 is an abundant number, since it is smaller than the sum of its proper divisors (22074646939218).

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

18011075555502 is a wasteful number, since it uses less digits than its factorization.

18011075555502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126126 (or 126120 counting only the distinct ones).

The product of its (nonzero) digits is 350000, while the sum is 45.

The spelling of 18011075555502 in words is "eighteen trillion, eleven billion, seventy-five million, five hundred fifty-five thousand, five hundred two".