6466849486647 has 32 divisors (see below), whose sum is σ = 9491933051136. Its totient is φ = 3883650624000.

The previous prime is 6466849486621. The next prime is 6466849486651. The reversal of 6466849486647 is 7466849486646.

It is not a de Polignac number, because 6466849486647 - 2²² = 6466845292343 is a prime.

It is a super-3 number, since 3×6466849486647³ (a number of 39 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6466849436647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14892133 + ... + 15320225.

It is an arithmetic number, because the mean of its divisors is an integer number (296622907848).

Almost surely, 2^{6466849486647} is an apocalyptic number.

6466849486647 is a deficient number, since it is larger than the sum of its proper divisors (3025083564489).

6466849486647 is a wasteful number, since it uses less digits than its factorization.

6466849486647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432271.

The product of its digits is 8026324992, while the sum is 78.

Subtracting 6466849486647 from its reverse (7466849486646), we obtain a palindrome (999999999999).

The spelling of 6466849486647 in words is "six trillion, four hundred sixty-six billion, eight hundred forty-nine million, four hundred eighty-six thousand, six hundred forty-seven".