803866671385 has 8 divisors (see below), whose sum is σ = 965584811016. Its totient is φ = 642463466880.

The previous prime is 803866671373. The next prime is 803866671427. The reversal of 803866671385 is 583176668308.

It can be written as a sum of positive squares in 4 ways, for example, as 84492864 + 803782178521 = 9192^2 + 896539^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 803866671385 - 2¹¹ = 803866669337 is a prime.

It is a Duffinian 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, 78728164 + ... + 78738373.

It is an arithmetic number, because the mean of its divisors is an integer number (120698101377).

Almost surely, 2^803866671385 is an apocalyptic number.

It is an amenable number.

803866671385 is a deficient number, since it is larger than the sum of its proper divisors (161718139631).

803866671385 is a wasteful number, since it uses less digits than its factorization.

803866671385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157467563.

The product of its (nonzero) digits is 34836480, while the sum is 61.

The spelling of 803866671385 in words is "eight hundred three billion, eight hundred sixty-six million, six hundred seventy-one thousand, three hundred eighty-five".