214186541209 has 2 divisors, whose sum is σ = 214186541210. Its totient is φ = 214186541208.

The previous prime is 214186541183. The next prime is 214186541263. The reversal of 214186541209 is 902145681412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205274237184 + 8912304025 = 453072^2 + 94405^2 .

It is a cyclic number.

It is not a de Polignac number, because 214186541209 - 2¹⁵ = 214186508441 is a prime.

It is not a weakly prime, because it can be changed into another prime (214186541269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107093270604 + 107093270605.

It is an arithmetic number, because the mean of its divisors is an integer number (107093270605).

Almost surely, 2^214186541209 is an apocalyptic number.

It is an amenable number.

214186541209 is a deficient number, since it is larger than the sum of its proper divisors (1).

214186541209 is an equidigital number, since it uses as much as digits as its factorization.

214186541209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 214186541209 in words is "two hundred fourteen billion, one hundred eighty-six million, five hundred forty-one thousand, two hundred nine".