6809505047469 has 20 divisors (see below), whose sum is σ = 10174864134556. Its totient is φ = 4538491606656.

The previous prime is 6809505047419. The next prime is 6809505047473. The reversal of 6809505047469 is 9647405059086.

6809505047469 is a `hidden beast` number, since 6 + 8 + 0 + 9 + 50 + 50 + 474 + 69 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3466410948900 + 3343094098569 = 1861830^2 + 1828413^2 .

It is not a de Polignac number, because 6809505047469 - 2³² = 6805210080173 is a prime.

It is a super-2 number, since 2×6809505047469² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6809505047419) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10597324 + ... + 11221509.

Almost surely, 2^{6809505047469} is an apocalyptic number.

It is an amenable number.

6809505047469 is a deficient number, since it is larger than the sum of its proper divisors (3365359087087).

6809505047469 is a wasteful number, since it uses less digits than its factorization.

6809505047469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21822698 (or 21822689 counting only the distinct ones).

The product of its (nonzero) digits is 65318400, while the sum is 63.

The spelling of 6809505047469 in words is "six trillion, eight hundred nine billion, five hundred five million, forty-seven thousand, four hundred sixty-nine".