243145220336 has 20 divisors (see below), whose sum is σ = 471227466000. Its totient is φ = 121538132352.

The previous prime is 243145220333. The next prime is 243145220369. The reversal of 243145220336 is 633022541342.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 243145220296 and 243145220305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243145220333) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2096636 + ... + 2209563.

It is an arithmetic number, because the mean of its divisors is an integer number (23561373300).

Almost surely, 2^243145220336 is an apocalyptic number.

It is an amenable number.

243145220336 is a deficient number, since it is larger than the sum of its proper divisors (228082245664).

243145220336 is a wasteful number, since it uses less digits than its factorization.

243145220336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4309736 (or 4309730 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 35.

Adding to 243145220336 its reverse (633022541342), we get a palindrome (876167761678).

The spelling of 243145220336 in words is "two hundred forty-three billion, one hundred forty-five million, two hundred twenty thousand, three hundred thirty-six".