616443415243 has 2 divisors, whose sum is σ = 616443415244. Its totient is φ = 616443415242.

The previous prime is 616443415223. The next prime is 616443415267. The reversal of 616443415243 is 342514344616.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-616443415243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 616443415243.

It is not a weakly prime, because it can be changed into another prime (616443415223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308221707621 + 308221707622.

It is an arithmetic number, because the mean of its divisors is an integer number (308221707622).

Almost surely, 2^616443415243 is an apocalyptic number.

616443415243 is a deficient number, since it is larger than the sum of its proper divisors (1).

616443415243 is an equidigital number, since it uses as much as digits as its factorization.

616443415243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 829440, while the sum is 43.

Adding to 616443415243 its reverse (342514344616), we get a palindrome (958957759859).

The spelling of 616443415243 in words is "six hundred sixteen billion, four hundred forty-three million, four hundred fifteen thousand, two hundred forty-three".