671317763545441 has 16 divisors (see below), whose sum is σ = 674019243076608. Its totient is φ = 668619837970000.

The previous prime is 671317763545439. The next prime is 671317763545489. The reversal of 671317763545441 is 144545367713176.

It is a happy number.

671317763545441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 671317763545441 - 2¹ = 671317763545439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671317763545411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6565339566 + ... + 6565441816.

It is an arithmetic number, because the mean of its divisors is an integer number (42126202692288).

Almost surely, 2^{671317763545441} is an apocalyptic number.

It is an amenable number.

671317763545441 is a deficient number, since it is larger than the sum of its proper divisors (2701479531167).

671317763545441 is a wasteful number, since it uses less digits than its factorization.

671317763545441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119372.

The product of its digits is 177811200, while the sum is 64.

The spelling of 671317763545441 in words is "six hundred seventy-one trillion, three hundred seventeen billion, seven hundred sixty-three million, five hundred forty-five thousand, four hundred forty-one".