671816681733 has 8 divisors (see below), whose sum is σ = 896395864000. Its totient is φ = 447557643648.

The previous prime is 671816681707. The next prime is 671816681747. The reversal of 671816681733 is 337186618176.

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

It is not a de Polignac number, because 671816681733 - 2¹⁴ = 671816665349 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671816681773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80031148 + ... + 80039541.

It is an arithmetic number, because the mean of its divisors is an integer number (112049483000).

Almost surely, 2^671816681733 is an apocalyptic number.

It is an amenable number.

671816681733 is a deficient number, since it is larger than the sum of its proper divisors (224579182267).

671816681733 is a wasteful number, since it uses less digits than its factorization.

671816681733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160072091.

The product of its digits is 6096384, while the sum is 57.

The spelling of 671816681733 in words is "six hundred seventy-one billion, eight hundred sixteen million, six hundred eighty-one thousand, seven hundred thirty-three".