2809006447049 has 4 divisors (see below), whose sum is σ = 3064370669520. Its totient is φ = 2553642224580.

The previous prime is 2809006447043. The next prime is 2809006447057. The reversal of 2809006447049 is 9407446009082.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2809006447049 - 2²⁰ = 2809005398473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2809006447043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127682111219 + ... + 127682111240.

It is an arithmetic number, because the mean of its divisors is an integer number (766092667380).

Almost surely, 2^{2809006447049} is an apocalyptic number.

It is an amenable number.

2809006447049 is a deficient number, since it is larger than the sum of its proper divisors (255364222471).

2809006447049 is a wasteful number, since it uses less digits than its factorization.

2809006447049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255364222470.

The product of its (nonzero) digits is 3483648, while the sum is 53.

The spelling of 2809006447049 in words is "two trillion, eight hundred nine billion, six million, four hundred forty-seven thousand, forty-nine".