213243426663 has 16 divisors (see below), whose sum is σ = 288295948800. Its totient is φ = 140177628864.

The previous prime is 213243426629. The next prime is 213243426679. The reversal of 213243426663 is 366624342312.

It is not a de Polignac number, because 213243426663 - 2¹⁴ = 213243410279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213243426563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 709888 + ... + 964586.

It is an arithmetic number, because the mean of its divisors is an integer number (18018496800).

Almost surely, 2^213243426663 is an apocalyptic number.

213243426663 is a deficient number, since it is larger than the sum of its proper divisors (75052522137).

213243426663 is a wasteful number, since it uses less digits than its factorization.

213243426663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258598.

The product of its digits is 746496, while the sum is 42.

Adding to 213243426663 its reverse (366624342312), we get a palindrome (579867768975).

The spelling of 213243426663 in words is "two hundred thirteen billion, two hundred forty-three million, four hundred twenty-six thousand, six hundred sixty-three".