2861081804449 has 24 divisors (see below), whose sum is σ = 3282044532480. Its totient is φ = 2487527602560.

The previous prime is 2861081804437. The next prime is 2861081804491. The reversal of 2861081804449 is 9444081801682.

2861081804449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2861081804449 - 2¹³ = 2861081796257 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 2861081804449.

It is not an unprimeable number, because it can be changed into a prime (2861081804249) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19566792 + ... + 19712470.

It is an arithmetic number, because the mean of its divisors is an integer number (136751855520).

Almost surely, 2^{2861081804449} is an apocalyptic number.

It is an amenable number.

2861081804449 is a deficient number, since it is larger than the sum of its proper divisors (420962728031).

2861081804449 is a wasteful number, since it uses less digits than its factorization.

2861081804449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152781 (or 152770 counting only the distinct ones).

The product of its (nonzero) digits is 3538944, while the sum is 55.

The spelling of 2861081804449 in words is "two trillion, eight hundred sixty-one billion, eighty-one million, eight hundred four thousand, four hundred forty-nine".