18241310987218 has 24 divisors (see below), whose sum is σ = 30140508109824. Its totient is φ = 8273596725240.

The previous prime is 18241310987209. The next prime is 18241310987231. The reversal of 18241310987218 is 81278901314281.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81288946 + ... + 81513037.

It is an arithmetic number, because the mean of its divisors is an integer number (1255854504576).

Almost surely, 2^{18241310987218} is an apocalyptic number.

18241310987218 is a deficient number, since it is larger than the sum of its proper divisors (11899197122606).

18241310987218 is a wasteful number, since it uses less digits than its factorization.

18241310987218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162802470 (or 162802459 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 55.

The spelling of 18241310987218 in words is "eighteen trillion, two hundred forty-one billion, three hundred ten million, nine hundred eighty-seven thousand, two hundred eighteen".