218000266834653 has 16 divisors (see below), whose sum is σ = 323118108408960. Its totient is φ = 145263873662208.

The previous prime is 218000266834619. The next prime is 218000266834663. The reversal of 218000266834653 is 356438662000812.

218000266834653 is a `hidden beast` number, since 2 + 1 + 80 + 0 + 0 + 26 + 6 + 83 + 465 + 3 = 666.

218000266834653 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 218000266834653 - 2⁸ = 218000266834397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 218000266834653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218000266834663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1934319300 + ... + 1934431997.

It is an arithmetic number, because the mean of its divisors is an integer number (20194881775560).

Almost surely, 2^{218000266834653} is an apocalyptic number.

It is an amenable number.

218000266834653 is a deficient number, since it is larger than the sum of its proper divisors (105117841574307).

218000266834653 is a wasteful number, since it uses less digits than its factorization.

218000266834653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3868753393 (or 3868753387 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 54.

The spelling of 218000266834653 in words is "two hundred eighteen trillion, two hundred sixty-six million, eight hundred thirty-four thousand, six hundred fifty-three".