213064516205 has 16 divisors (see below), whose sum is σ = 256153638384. Its totient is φ = 170134272000.

The previous prime is 213064516201. The next prime is 213064516261. The reversal of 213064516205 is 502615460312.

It can be written as a sum of positive squares in 8 ways, for example, as 46422580681 + 166641935524 = 215459^2 + 408218^2 .

It is not a de Polignac number, because 213064516205 - 2² = 213064516201 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 (213064516201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23666705 + ... + 23675705.

It is an arithmetic number, because the mean of its divisors is an integer number (16009602399).

Almost surely, 2^213064516205 is an apocalyptic number.

It is an amenable number.

213064516205 is a deficient number, since it is larger than the sum of its proper divisors (43089122179).

213064516205 is an equidigital number, since it uses as much as digits as its factorization.

213064516205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17296.

The product of its (nonzero) digits is 43200, while the sum is 35.

Adding to 213064516205 its reverse (502615460312), we get a palindrome (715679976517).

The spelling of 213064516205 in words is "two hundred thirteen billion, sixty-four million, five hundred sixteen thousand, two hundred five".