218945392033988 has 24 divisors (see below), whose sum is σ = 392242973699808. Its totient is φ = 106878282267456.

The previous prime is 218945392033931. The next prime is 218945392033999. The reversal of 218945392033988 is 889330293549812.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288531281 + ... + 289289112.

It is an arithmetic number, because the mean of its divisors is an integer number (16343457237492).

Almost surely, 2^{218945392033988} is an apocalyptic number.

It is an amenable number.

218945392033988 is a deficient number, since it is larger than the sum of its proper divisors (173297581665820).

218945392033988 is a wasteful number, since it uses less digits than its factorization.

218945392033988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577822643 (or 577822641 counting only the distinct ones).

The product of its (nonzero) digits is 806215680, while the sum is 74.

The spelling of 218945392033988 in words is "two hundred eighteen trillion, nine hundred forty-five billion, three hundred ninety-two million, thirty-three thousand, nine hundred eighty-eight".