213540210534 has 16 divisors (see below), whose sum is σ = 488091909888. Its totient is φ = 61011488712.

The previous prime is 213540210523. The next prime is 213540210539. The reversal of 213540210534 is 435012045312.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213540210539) 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 7 ways as a sum of consecutive naturals, for example, 2542145322 + ... + 2542145405.

It is an arithmetic number, because the mean of its divisors is an integer number (30505744368).

Almost surely, 2^213540210534 is an apocalyptic number.

213540210534 is an abundant number, since it is smaller than the sum of its proper divisors (274551699354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213540210534 is a wasteful number, since it uses less digits than its factorization.

213540210534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5084290739.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 213540210534 its reverse (435012045312), we get a palindrome (648552255846).

The spelling of 213540210534 in words is "two hundred thirteen billion, five hundred forty million, two hundred ten thousand, five hundred thirty-four".