850209396611 has 2 divisors, whose sum is σ = 850209396612. Its totient is φ = 850209396610.

The previous prime is 850209396587. The next prime is 850209396661. The reversal of 850209396611 is 116693902058.

It is a happy number.

It is an a-pointer prime, because the next prime (850209396661) can be obtained adding 850209396611 to its sum of digits (50).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 850209396611 - 2¹⁰ = 850209395587 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 850209396611.

It is not a weakly prime, because it can be changed into another prime (850209396661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425104698305 + 425104698306.

It is an arithmetic number, because the mean of its divisors is an integer number (425104698306).

Almost surely, 2^850209396611 is an apocalyptic number.

850209396611 is a deficient number, since it is larger than the sum of its proper divisors (1).

850209396611 is an equidigital number, since it uses as much as digits as its factorization.

850209396611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 699840, while the sum is 50.

The spelling of 850209396611 in words is "eight hundred fifty billion, two hundred nine million, three hundred ninety-six thousand, six hundred eleven".