850823043853 has 2 divisors, whose sum is σ = 850823043854. Its totient is φ = 850823043852.

The previous prime is 850823043823. The next prime is 850823043877. The reversal of 850823043853 is 358340328058.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 827930748649 + 22892295204 = 909907^2 + 151302^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-850823043853 is a prime.

It is a super-2 number, since 2×850823043853² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 850823043797 and 850823043806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (850823043823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425411521926 + 425411521927.

It is an arithmetic number, because the mean of its divisors is an integer number (425411521927).

Almost surely, 2^850823043853 is an apocalyptic number.

It is an amenable number.

850823043853 is a deficient number, since it is larger than the sum of its proper divisors (1).

850823043853 is an equidigital number, since it uses as much as digits as its factorization.

850823043853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2764800, while the sum is 49.

The spelling of 850823043853 in words is "eight hundred fifty billion, eight hundred twenty-three million, forty-three thousand, eight hundred fifty-three".