2809669671489 has 16 divisors (see below), whose sum is σ = 4008041871680. Its totient is φ = 1745437584960.

The previous prime is 2809669671481. The next prime is 2809669671491. The reversal of 2809669671489 is 9841769669082.

It is not a de Polignac number, because 2809669671489 - 2³ = 2809669671481 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2809669671489.

It is not an unprimeable number, because it can be changed into a prime (2809669671481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 404033002 + ... + 404039955.

It is an arithmetic number, because the mean of its divisors is an integer number (250502616980).

Almost surely, 2^{2809669671489} is an apocalyptic number.

It is an amenable number.

2809669671489 is a deficient number, since it is larger than the sum of its proper divisors (1198372200191).

2809669671489 is a wasteful number, since it uses less digits than its factorization.

2809669671489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808073040.

The product of its (nonzero) digits is 564350976, while the sum is 75.

The spelling of 2809669671489 in words is "two trillion, eight hundred nine billion, six hundred sixty-nine million, six hundred seventy-one thousand, four hundred eighty-nine".