823273383085 has 4 divisors (see below), whose sum is σ = 987928059708. Its totient is φ = 658618706464.

The previous prime is 823273383077. The next prime is 823273383103. The reversal of 823273383085 is 580383372328.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 449841172804 + 373432210281 = 670702^2 + 611091^2 .

It is a cyclic number.

It is not a de Polignac number, because 823273383085 - 2³ = 823273383077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82327338304 + ... + 82327338313.

It is an arithmetic number, because the mean of its divisors is an integer number (246982014927).

Almost surely, 2^823273383085 is an apocalyptic number.

It is an amenable number.

823273383085 is a deficient number, since it is larger than the sum of its proper divisors (164654676623).

823273383085 is a wasteful number, since it uses less digits than its factorization.

823273383085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164654676622.

The product of its (nonzero) digits is 5806080, while the sum is 52.

The spelling of 823273383085 in words is "eight hundred twenty-three billion, two hundred seventy-three million, three hundred eighty-three thousand, eighty-five".