6466671573687 has 160 divisors (see below), whose sum is σ = 11084625034560. Its totient is φ = 3721849896960.

The previous prime is 6466671573673. The next prime is 6466671573707. The reversal of 6466671573687 is 7863751766646.

It is not a de Polignac number, because 6466671573687 - 2⁴ = 6466671573671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6466671573487) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 2071985487 + ... + 2071988607.

It is an arithmetic number, because the mean of its divisors is an integer number (69278906466).

Almost surely, 2^{6466671573687} is an apocalyptic number.

6466671573687 is a deficient number, since it is larger than the sum of its proper divisors (4617953460873).

6466671573687 is a wasteful number, since it uses less digits than its factorization.

6466671573687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3855 (or 3846 counting only the distinct ones).

The product of its digits is 1280240640, while the sum is 72.

The spelling of 6466671573687 in words is "six trillion, four hundred sixty-six billion, six hundred seventy-one million, five hundred seventy-three thousand, six hundred eighty-seven".