850956823709 has 2 divisors, whose sum is σ = 850956823710. Its totient is φ = 850956823708.

The previous prime is 850956823637. The next prime is 850956823711. The reversal of 850956823709 is 907328659058.

850956823709 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 815932824100 + 35023999609 = 903290^2 + 187147^2 .

It is a cyclic number.

It is not a de Polignac number, because 850956823709 - 2³² = 846661856413 is a prime.

It is a Sophie Germain prime.

Together with 850956823711, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (850956823789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425478411854 + 425478411855.

It is an arithmetic number, because the mean of its divisors is an integer number (425478411855).

Almost surely, 2^850956823709 is an apocalyptic number.

It is an amenable number.

850956823709 is a deficient number, since it is larger than the sum of its proper divisors (1).

850956823709 is an equidigital number, since it uses as much as digits as its factorization.

850956823709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32659200, while the sum is 62.

The spelling of 850956823709 in words is "eight hundred fifty billion, nine hundred fifty-six million, eight hundred twenty-three thousand, seven hundred nine".