809071388532 has 72 divisors (see below), whose sum is σ = 2237290735680. Its totient is φ = 244490171520.

The previous prime is 809071388497. The next prime is 809071388549. The reversal of 809071388532 is 235883170908.

809071388532 is a `hidden beast` number, since 8 + 0 + 9 + 0 + 71 + 38 + 8 + 532 = 666.

809071388532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×809071388532² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2703393 + ... + 2987720.

It is an arithmetic number, because the mean of its divisors is an integer number (31073482440).

Almost surely, 2^809071388532 is an apocalyptic number.

It is an amenable number.

809071388532 is an abundant number, since it is smaller than the sum of its proper divisors (1428219347148).

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

809071388532 is a wasteful number, since it uses less digits than its factorization.

809071388532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5691493 (or 5691488 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 809071388532 in words is "eight hundred nine billion, seventy-one million, three hundred eighty-eight thousand, five hundred thirty-two".