213502544413 has 2 divisors, whose sum is σ = 213502544414. Its totient is φ = 213502544412.

The previous prime is 213502544407. The next prime is 213502544471. The reversal of 213502544413 is 314445205312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210132393604 + 3370150809 = 458402^2 + 58053^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213502544413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213502544473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106751272206 + 106751272207.

It is an arithmetic number, because the mean of its divisors is an integer number (106751272207).

Almost surely, 2^213502544413 is an apocalyptic number.

It is an amenable number.

213502544413 is a deficient number, since it is larger than the sum of its proper divisors (1).

213502544413 is an equidigital number, since it uses as much as digits as its factorization.

213502544413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 213502544413 its reverse (314445205312), we get a palindrome (527947749725).

The spelling of 213502544413 in words is "two hundred thirteen billion, five hundred two million, five hundred forty-four thousand, four hundred thirteen".