805399316127 has 16 divisors (see below), whose sum is σ = 1363639054080. Its totient is φ = 460228180536.

The previous prime is 805399316089. The next prime is 805399316237. The reversal of 805399316127 is 721613993508.

805399316127 is a `hidden beast` number, since 8 + 0 + 539 + 93 + 1 + 6 + 12 + 7 = 666.

It is not a de Polignac number, because 805399316127 - 2¹¹ = 805399314079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805399316327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2130685833 + ... + 2130686210.

It is an arithmetic number, because the mean of its divisors is an integer number (85227440880).

Almost surely, 2^805399316127 is an apocalyptic number.

805399316127 is a deficient number, since it is larger than the sum of its proper divisors (558239737953).

805399316127 is a wasteful number, since it uses less digits than its factorization.

805399316127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4261372059 (or 4261372053 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The spelling of 805399316127 in words is "eight hundred five billion, three hundred ninety-nine million, three hundred sixteen thousand, one hundred twenty-seven".