1444866886868 has 12 divisors (see below), whose sum is σ = 2543132758740. Its totient is φ = 718257527232.

The previous prime is 1444866886849. The next prime is 1444866886873. The reversal of 1444866886868 is 8686886684441.

It can be written as a sum of positive squares in 2 ways, for example, as 727793259664 + 717073627204 = 853108^2 + 846802^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1043978273 + ... + 1043979656.

It is an arithmetic number, because the mean of its divisors is an integer number (211927729895).

Almost surely, 2^{1444866886868} is an apocalyptic number.

It is an amenable number.

1444866886868 is a deficient number, since it is larger than the sum of its proper divisors (1098265871872).

1444866886868 is a wasteful number, since it uses less digits than its factorization.

1444866886868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2087958106 (or 2087958104 counting only the distinct ones).

The product of its digits is 2717908992, while the sum is 77.

The spelling of 1444866886868 in words is "one trillion, four hundred forty-four billion, eight hundred sixty-six million, eight hundred eighty-six thousand, eight hundred sixty-eight".