18018181800036 has 48 divisors (see below), whose sum is σ = 50960514185280. Its totient is φ = 5460055090560.

The previous prime is 18018181799993. The next prime is 18018181800061. The reversal of 18018181800036 is 63000818181081.

It is a junction number, because it is equal to n+sod(n) for n = 18018181799964 and 18018181800000.

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 15 ways as a sum of consecutive naturals, for example, 7583408661 + ... + 7583411036.

It is an arithmetic number, because the mean of its divisors is an integer number (1061677378860).

Almost surely, 2^{18018181800036} is an apocalyptic number.

It is an amenable number.

18018181800036 is an abundant number, since it is smaller than the sum of its proper divisors (32942332385244).

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

18018181800036 is a wasteful number, since it uses less digits than its factorization.

18018181800036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15166819721 (or 15166819713 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 45.

The spelling of 18018181800036 in words is "eighteen trillion, eighteen billion, one hundred eighty-one million, eight hundred thousand, thirty-six".