823326813820 has 24 divisors (see below), whose sum is σ = 1975984353504. Its totient is φ = 282283478976.

The previous prime is 823326813811. The next prime is 823326813851. The reversal of 823326813820 is 28318623328.

It is a super-4 number, since 4×823326813820⁴ (a number of 49 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 2940452767 + ... + 2940453046.

It is an arithmetic number, because the mean of its divisors is an integer number (82332681396).

Almost surely, 2^823326813820 is an apocalyptic number.

It is an amenable number.

823326813820 is an abundant number, since it is smaller than the sum of its proper divisors (1152657539684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

823326813820 is a wasteful number, since it uses less digits than its factorization.

823326813820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5880905829 (or 5880905827 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 46.

The spelling of 823326813820 in words is "eight hundred twenty-three billion, three hundred twenty-six million, eight hundred thirteen thousand, eight hundred twenty".