213406004650213 has 4 divisors (see below), whose sum is σ = 225959299041420. Its totient is φ = 200852710259008.

The previous prime is 213406004650193. The next prime is 213406004650219. The reversal of 213406004650213 is 312056400604312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 182518397743969 + 30887606906244 = 13509937^2 + 5557662^2 .

It is a cyclic number.

It is not a de Polignac number, because 213406004650213 - 2³³ = 213397414715621 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 (213406004650219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6276647195578 + ... + 6276647195611.

It is an arithmetic number, because the mean of its divisors is an integer number (56489824760355).

Almost surely, 2^{213406004650213} is an apocalyptic number.

It is an amenable number.

213406004650213 is a deficient number, since it is larger than the sum of its proper divisors (12553294391207).

213406004650213 is a wasteful number, since it uses less digits than its factorization.

213406004650213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12553294391206.

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 213406004650213 in words is "two hundred thirteen trillion, four hundred six billion, four million, six hundred fifty thousand, two hundred thirteen".