809350834512 has 120 divisors (see below), whose sum is σ = 2300381342560. Its totient is φ = 245022624000.

The previous prime is 809350834511. The next prime is 809350834529. The reversal of 809350834512 is 215438053908.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (809350834511) 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 23 ways as a sum of consecutive naturals, for example, 6037914 + ... + 6170502.

Almost surely, 2^809350834512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 809350834512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1150190671280).

809350834512 is an abundant number, since it is smaller than the sum of its proper divisors (1491030508048).

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

809350834512 is a wasteful number, since it uses less digits than its factorization.

809350834512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133673 (or 133656 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 48.

The spelling of 809350834512 in words is "eight hundred nine billion, three hundred fifty million, eight hundred thirty-four thousand, five hundred twelve".