671346646718 has 16 divisors (see below), whose sum is σ = 1098585215856. Its totient is φ = 305152573440.

The previous prime is 671346646717. The next prime is 671346646771. The reversal of 671346646718 is 817646643176.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671346646717) 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 7 ways as a sum of consecutive naturals, for example, 1354430 + ... + 1782462.

It is an arithmetic number, because the mean of its divisors is an integer number (68661575991).

Almost surely, 2^671346646718 is an apocalyptic number.

671346646718 is a deficient number, since it is larger than the sum of its proper divisors (427238569138).

671346646718 is a wasteful number, since it uses less digits than its factorization.

671346646718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499339.

The product of its digits is 24385536, while the sum is 59.

The spelling of 671346646718 in words is "six hundred seventy-one billion, three hundred forty-six million, six hundred forty-six thousand, seven hundred eighteen".