820320312976 has 40 divisors (see below), whose sum is σ = 1645227198720. Its totient is φ = 395763629184.

The previous prime is 820320312907. The next prime is 820320313051. The reversal of 820320312976 is 679213023028.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162975 + ... + 1291201.

It is an arithmetic number, because the mean of its divisors is an integer number (41130679968).

Almost surely, 2^820320312976 is an apocalyptic number.

It is an amenable number.

820320312976 is an abundant number, since it is smaller than the sum of its proper divisors (824906885744).

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

820320312976 is a wasteful number, since it uses less digits than its factorization.

820320312976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129831 (or 1129825 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 820320312976 in words is "eight hundred twenty billion, three hundred twenty million, three hundred twelve thousand, nine hundred seventy-six".