218153564380684 has 12 divisors (see below), whose sum is σ = 382067695183104. Its totient is φ = 108991365756944.

The previous prime is 218153564380681. The next prime is 218153564380769. The reversal of 218153564380684 is 486083465351812.

It is not an unprimeable number, because it can be changed into a prime (218153564380681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21354102604 + ... + 21354112819.

It is an arithmetic number, because the mean of its divisors is an integer number (31838974598592).

Almost surely, 2^{218153564380684} is an apocalyptic number.

It is an amenable number.

218153564380684 is a deficient number, since it is larger than the sum of its proper divisors (163914130802420).

218153564380684 is a wasteful number, since it uses less digits than its factorization.

218153564380684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42708216704 (or 42708216702 counting only the distinct ones).

The product of its (nonzero) digits is 132710400, while the sum is 64.

The spelling of 218153564380684 in words is "two hundred eighteen trillion, one hundred fifty-three billion, five hundred sixty-four million, three hundred eighty thousand, six hundred eighty-four".