16543770671 has 8 divisors (see below), whose sum is σ = 17288064384. Its totient is φ = 15801560280.

The previous prime is 16543770631. The next prime is 16543770703. The reversal of 16543770671 is 17607734561.

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

It is not a de Polignac number, because 16543770671 - 2²⁶ = 16476661807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16543770631) 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 7 ways as a sum of consecutive naturals, for example, 504581 + ... + 536366.

It is an arithmetic number, because the mean of its divisors is an integer number (2161008048).

Almost surely, 2^16543770671 is an apocalyptic number.

16543770671 is a deficient number, since it is larger than the sum of its proper divisors (744293713).

16543770671 is a wasteful number, since it uses less digits than its factorization.

16543770671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041661.

The product of its (nonzero) digits is 740880, while the sum is 47.

The spelling of 16543770671 in words is "sixteen billion, five hundred forty-three million, seven hundred seventy thousand, six hundred seventy-one".