18040217002 has 8 divisors (see below), whose sum is σ = 27308585700. Its totient is φ = 8937355104.

The previous prime is 18040216979. The next prime is 18040217051. The reversal of 18040217002 is 20071204081.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18025479081 + 14737921 = 134259^2 + 3839^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 41376427 + ... + 41376862.

Almost surely, 2^18040217002 is an apocalyptic number.

18040217002 is a deficient number, since it is larger than the sum of its proper divisors (9268368698).

18040217002 is a wasteful number, since it uses less digits than its factorization.

18040217002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82753400.

The product of its (nonzero) digits is 896, while the sum is 25.

The spelling of 18040217002 in words is "eighteen billion, forty million, two hundred seventeen thousand, two".