218432270008669 has 2 divisors, whose sum is σ = 218432270008670. Its totient is φ = 218432270008668.

The previous prime is 218432270008507. The next prime is 218432270008679. The reversal of 218432270008669 is 966800072234812.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111825612506169 + 106606657502500 = 10574763^2 + 10325050^2 .

It is a cyclic number.

It is not a de Polignac number, because 218432270008669 - 2²³ = 218432261620061 is a prime.

It is a super-2 number, since 2×218432270008669² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (218432270008679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109216135004334 + 109216135004335.

It is an arithmetic number, because the mean of its divisors is an integer number (109216135004335).

Almost surely, 2^{218432270008669} is an apocalyptic number.

It is an amenable number.

218432270008669 is a deficient number, since it is larger than the sum of its proper divisors (1).

218432270008669 is an equidigital number, since it uses as much as digits as its factorization.

218432270008669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13934592, while the sum is 58.

The spelling of 218432270008669 in words is "two hundred eighteen trillion, four hundred thirty-two billion, two hundred seventy million, eight thousand, six hundred sixty-nine".