6489281000905 has 8 divisors (see below), whose sum is σ = 7790656029192. Its totient is φ = 5189078915328.

The previous prime is 6489281000893. The next prime is 6489281000941. The reversal of 6489281000905 is 5090001829846.

It can be written as a sum of positive squares in 4 ways, for example, as 2061185676489 + 4428095324416 = 1435683^2 + 2104304^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6489281000905 - 2⁷ = 6489281000777 is a prime.

It is a super-2 number, since 2×6489281000905² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 293223504 + ... + 293245633.

It is an arithmetic number, because the mean of its divisors is an integer number (973832003649).

Almost surely, 2^{6489281000905} is an apocalyptic number.

It is an amenable number.

6489281000905 is a deficient number, since it is larger than the sum of its proper divisors (1301375028287).

6489281000905 is a wasteful number, since it uses less digits than its factorization.

6489281000905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586471355.

The product of its (nonzero) digits is 1244160, while the sum is 52.

The spelling of 6489281000905 in words is "six trillion, four hundred eighty-nine billion, two hundred eighty-one million, nine hundred five", and thus it is an aban number.