218605768983 has 48 divisors (see below), whose sum is σ = 361722943296. Its totient is φ = 124623774720.

The previous prime is 218605768963. The next prime is 218605768993. The reversal of 218605768983 is 389867506812.

218605768983 is a `hidden beast` number, since 2 + 18 + 605 + 7 + 6 + 8 + 9 + 8 + 3 = 666.

It is not a de Polignac number, because 218605768983 - 2³⁴ = 201425899799 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 218605768983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218605768963) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 63160873 + ... + 63164333.

It is an arithmetic number, because the mean of its divisors is an integer number (7535894652).

Almost surely, 2^218605768983 is an apocalyptic number.

218605768983 is a deficient number, since it is larger than the sum of its proper divisors (143117174313).

218605768983 is a wasteful number, since it uses less digits than its factorization.

218605768983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5544 (or 5541 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 63.

The spelling of 218605768983 in words is "two hundred eighteen billion, six hundred five million, seven hundred sixty-eight thousand, nine hundred eighty-three".