84566204213 has 2 divisors, whose sum is σ = 84566204214. Its totient is φ = 84566204212.

The previous prime is 84566204179. The next prime is 84566204231. The reversal of 84566204213 is 31240266548.

Together with next prime (84566204231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71630099044 + 12936105169 = 267638^2 + 113737^2 .

It is a cyclic number.

It is not a de Polignac number, because 84566204213 - 2¹⁶ = 84566138677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84566204113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42283102106 + 42283102107.

It is an arithmetic number, because the mean of its divisors is an integer number (42283102107).

Almost surely, 2^84566204213 is an apocalyptic number.

It is an amenable number.

84566204213 is a deficient number, since it is larger than the sum of its proper divisors (1).

84566204213 is an equidigital number, since it uses as much as digits as its factorization.

84566204213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 276480, while the sum is 41.

The spelling of 84566204213 in words is "eighty-four billion, five hundred sixty-six million, two hundred four thousand, two hundred thirteen".