213053316643 has 2 divisors, whose sum is σ = 213053316644. Its totient is φ = 213053316642.

The previous prime is 213053316589. The next prime is 213053316659. The reversal of 213053316643 is 346613350312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213053316643 - 2¹⁷ = 213053185571 is a prime.

It is not a weakly prime, because it can be changed into another prime (213053316043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106526658321 + 106526658322.

It is an arithmetic number, because the mean of its divisors is an integer number (106526658322).

Almost surely, 2^213053316643 is an apocalyptic number.

213053316643 is a deficient number, since it is larger than the sum of its proper divisors (1).

213053316643 is an equidigital number, since it uses as much as digits as its factorization.

213053316643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 37.

Adding to 213053316643 its reverse (346613350312), we get a palindrome (559666666955).

The spelling of 213053316643 in words is "two hundred thirteen billion, fifty-three million, three hundred sixteen thousand, six hundred forty-three".