213330243545 has 16 divisors (see below), whose sum is σ = 270422005440. Its totient is φ = 161110534464.

The previous prime is 213330243541. The next prime is 213330243557. The reversal of 213330243545 is 545342033312.

It is a cyclic number.

It is not a de Polignac number, because 213330243545 - 2² = 213330243541 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (213330243541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3940574 + ... + 3994343.

It is an arithmetic number, because the mean of its divisors is an integer number (16901375340).

Almost surely, 2^213330243545 is an apocalyptic number.

It is an amenable number.

213330243545 is a deficient number, since it is larger than the sum of its proper divisors (57091761895).

213330243545 is a wasteful number, since it uses less digits than its factorization.

213330243545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7935224.

The product of its (nonzero) digits is 129600, while the sum is 35.

Adding to 213330243545 its reverse (545342033312), we get a palindrome (758672276857).

The spelling of 213330243545 in words is "two hundred thirteen billion, three hundred thirty million, two hundred forty-three thousand, five hundred forty-five".