218905848676749 has 32 divisors (see below), whose sum is σ = 330872169066880. Its totient is φ = 127620324686592.

The previous prime is 218905848676721. The next prime is 218905848676769. The reversal of 218905848676749 is 947676848509812.

It is not a de Polignac number, because 218905848676749 - 2⁵ = 218905848676717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218905848676769) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112614579 + ... + 114541935.

It is an arithmetic number, because the mean of its divisors is an integer number (10339755283340).

Almost surely, 2^{218905848676749} is an apocalyptic number.

It is an amenable number.

218905848676749 is a deficient number, since it is larger than the sum of its proper divisors (111966320390131).

218905848676749 is a wasteful number, since it uses less digits than its factorization.

218905848676749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080669.

The product of its (nonzero) digits is 11705057280, while the sum is 84.

The spelling of 218905848676749 in words is "two hundred eighteen trillion, nine hundred five billion, eight hundred forty-eight million, six hundred seventy-six thousand, seven hundred forty-nine".