808240165506 has 24 divisors (see below), whose sum is σ = 1751260996524. Its totient is φ = 269402008320.

The previous prime is 808240165487. The next prime is 808240165531. The reversal of 808240165506 is 605561042808.

808240165506 is a `hidden beast` number, since 8 + 0 + 82 + 4 + 0 + 1 + 65 + 506 = 666.

808240165506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 801366926481 + 6873239025 = 895191^2 + 82905^2 .

It is a super-3 number, since 3×808240165506³ (a number of 37 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 504775 + ... + 1367946.

Almost surely, 2^808240165506 is an apocalyptic number.

808240165506 is an abundant number, since it is smaller than the sum of its proper divisors (943020831018).

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

808240165506 is a wasteful number, since it uses less digits than its factorization.

808240165506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1896706 (or 1896703 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The spelling of 808240165506 in words is "eight hundred eight billion, two hundred forty million, one hundred sixty-five thousand, five hundred six".