213205258073 has 6 divisors (see below), whose sum is σ = 226484478606. Its totient is φ = 200663772032.

The previous prime is 213205258061. The next prime is 213205258081. The reversal of 213205258073 is 370852502312.

It can be written as a sum of positive squares in 3 ways, for example, as 149558545984 + 63646712089 = 386728^2 + 252283^2 .

It is not a de Polignac number, because 213205258073 - 2⁸ = 213205257817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213205258093) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 368866940 + ... + 368867517.

It is an arithmetic number, because the mean of its divisors is an integer number (37747413101).

Almost surely, 2^213205258073 is an apocalyptic number.

It is an amenable number.

213205258073 is a deficient number, since it is larger than the sum of its proper divisors (13279220533).

213205258073 is an equidigital number, since it uses as much as digits as its factorization.

213205258073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737734491 (or 737734474 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 38.

The spelling of 213205258073 in words is "two hundred thirteen billion, two hundred five million, two hundred fifty-eight thousand, seventy-three".