218990065930271 has 4 divisors (see below), whose sum is σ = 218990100327432. Its totient is φ = 218990031533112.

The previous prime is 218990065930169. The next prime is 218990065930283. The reversal of 218990065930271 is 172039560099812.

218990065930271 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 218990065930271 - 2¹⁴ = 218990065913887 is a prime.

It is a super-2 number, since 2×218990065930271² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218990065900271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4546145 + ... + 21416058.

It is an arithmetic number, because the mean of its divisors is an integer number (54747525081858).

Almost surely, 2^{218990065930271} is an apocalyptic number.

218990065930271 is a deficient number, since it is larger than the sum of its proper divisors (34397161).

218990065930271 is an equidigital number, since it uses as much as digits as its factorization.

218990065930271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34397160.

The product of its (nonzero) digits is 14696640, while the sum is 62.

The spelling of 218990065930271 in words is "two hundred eighteen trillion, nine hundred ninety billion, sixty-five million, nine hundred thirty thousand, two hundred seventy-one".