6645460934871 has 60 divisors (see below), whose sum is σ = 10940178982656. Its totient is φ = 4017034010880.

The previous prime is 6645460934863. The next prime is 6645460934873. The reversal of 6645460934871 is 1784390645466.

6645460934871 is a `hidden beast` number, since 6 + 6 + 4 + 5 + 4 + 60 + 93 + 487 + 1 = 666.

It is not a de Polignac number, because 6645460934871 - 2³ = 6645460934863 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6645460934799 and 6645460934808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6645460934873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 2868615 + ... + 4638951.

Almost surely, 2^{6645460934871} is an apocalyptic number.

6645460934871 is a deficient number, since it is larger than the sum of its proper divisors (4294718047785).

6645460934871 is a wasteful number, since it uses less digits than its factorization.

6645460934871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1770754 (or 1770734 counting only the distinct ones).

The product of its (nonzero) digits is 104509440, while the sum is 63.

The spelling of 6645460934871 in words is "six trillion, six hundred forty-five billion, four hundred sixty million, nine hundred thirty-four thousand, eight hundred seventy-one".