213633418609 has 8 divisors (see below), whose sum is σ = 231234612840. Its totient is φ = 196199060736.

The previous prime is 213633418519. The next prime is 213633418657. The reversal of 213633418609 is 906814336312.

It can be written as a sum of positive squares in 4 ways, for example, as 47841937984 + 165791480625 = 218728^2 + 407175^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213633418609 - 2²⁷ = 213499200881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213633418409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41706424 + ... + 41711545.

It is an arithmetic number, because the mean of its divisors is an integer number (28904326605).

Almost surely, 2^213633418609 is an apocalyptic number.

It is an amenable number.

213633418609 is a deficient number, since it is larger than the sum of its proper divisors (17601194231).

213633418609 is a wasteful number, since it uses less digits than its factorization.

213633418609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83418179.

The product of its (nonzero) digits is 559872, while the sum is 46.

The spelling of 213633418609 in words is "two hundred thirteen billion, six hundred thirty-three million, four hundred eighteen thousand, six hundred nine".