850709463831 has 6 divisors (see below), whose sum is σ = 1228802558880. Its totient is φ = 567139642548.

The previous prime is 850709463829. The next prime is 850709463841. The reversal of 850709463831 is 138364907058.

850709463831 is a `hidden beast` number, since 85 + 0 + 70 + 9 + 463 + 8 + 31 = 666.

It is not a de Polignac number, because 850709463831 - 2¹ = 850709463829 is a prime.

It is a super-2 number, since 2×850709463831² (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 (850709463841) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 47261636871 + ... + 47261636888.

It is an arithmetic number, because the mean of its divisors is an integer number (204800426480).

Almost surely, 2^850709463831 is an apocalyptic number.

850709463831 is a deficient number, since it is larger than the sum of its proper divisors (378093095049).

850709463831 is a wasteful number, since it uses less digits than its factorization.

850709463831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94523273765 (or 94523273762 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 850709463831 in words is "eight hundred fifty billion, seven hundred nine million, four hundred sixty-three thousand, eight hundred thirty-one".