213233541644 has 24 divisors (see below), whose sum is σ = 375381442800. Its totient is φ = 105982139840.

The previous prime is 213233541613. The next prime is 213233541683. The reversal of 213233541644 is 446145332312.

It is a junction number, because it is equal to n+sod(n) for n = 213233541598 and 213233541607.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1943534 + ... + 2050314.

It is an arithmetic number, because the mean of its divisors is an integer number (15640893450).

Almost surely, 2^213233541644 is an apocalyptic number.

It is an amenable number.

213233541644 is a deficient number, since it is larger than the sum of its proper divisors (162147901156).

213233541644 is a wasteful number, since it uses less digits than its factorization.

213233541644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109753 (or 109751 counting only the distinct ones).

The product of its digits is 207360, while the sum is 38.

Adding to 213233541644 its reverse (446145332312), we get a palindrome (659378873956).

The spelling of 213233541644 in words is "two hundred thirteen billion, two hundred thirty-three million, five hundred forty-one thousand, six hundred forty-four".