18000281065896 has 96 divisors (see below), whose sum is σ = 48876454623360. Its totient is φ = 5984631184896.

The previous prime is 18000281065873. The next prime is 18000281065903. The reversal of 18000281065896 is 69856018200081.

It is a happy number.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 119110335 + ... + 119261361.

It is an arithmetic number, because the mean of its divisors is an integer number (509129735660).

Almost surely, 2^{18000281065896} is an apocalyptic number.

It is an amenable number.

18000281065896 is an abundant number, since it is smaller than the sum of its proper divisors (30876173557464).

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

18000281065896 is a wasteful number, since it uses less digits than its factorization.

18000281065896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155295 (or 155288 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 54.

The spelling of 18000281065896 in words is "eighteen trillion, two hundred eighty-one million, sixty-five thousand, eight hundred ninety-six".