805399316128 has 24 divisors (see below), whose sum is σ = 1729778077440. Its totient is φ = 366090598080.

The previous prime is 805399316089. The next prime is 805399316237. The reversal of 805399316128 is 821613993508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1144032768 + ... + 1144033471.

It is an arithmetic number, because the mean of its divisors is an integer number (72074086560).

Almost surely, 2^805399316128 is an apocalyptic number.

805399316128 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

805399316128 is an abundant number, since it is smaller than the sum of its proper divisors (924378761312).

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

805399316128 is a wasteful number, since it uses less digits than its factorization.

805399316128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2288066260 (or 2288066252 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 55.

The spelling of 805399316128 in words is "eight hundred five billion, three hundred ninety-nine million, three hundred sixteen thousand, one hundred twenty-eight".