850387207869 has 12 divisors (see below), whose sum is σ = 1228552612092. Its totient is φ = 566825328000.

The previous prime is 850387207843. The next prime is 850387207981. The reversal of 850387207869 is 968702783058.

It can be written as a sum of positive squares in 2 ways, for example, as 541345720644 + 309041487225 = 735762^2 + 555915^2 .

It is not a de Polignac number, because 850387207869 - 2⁹ = 850387207357 is a prime.

It is a super-2 number, since 2×850387207869² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (850387207169) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 8235612 + ... + 8338229.

It is an arithmetic number, because the mean of its divisors is an integer number (102379384341).

Almost surely, 2^850387207869 is an apocalyptic number.

It is an amenable number.

850387207869 is a deficient number, since it is larger than the sum of its proper divisors (378165404223).

850387207869 is a wasteful number, since it uses less digits than its factorization.

850387207869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16579548 (or 16579545 counting only the distinct ones).

The product of its (nonzero) digits is 40642560, while the sum is 63.

The spelling of 850387207869 in words is "eight hundred fifty billion, three hundred eighty-seven million, two hundred seven thousand, eight hundred sixty-nine".