66871735485 has 8 divisors (see below), whose sum is σ = 106994776800. Its totient is φ = 35664925584.

The previous prime is 66871735481. The next prime is 66871735487. The reversal of 66871735485 is 58453717866.

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

It is not a de Polignac number, because 66871735485 - 2² = 66871735481 is a prime.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66871735481) 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, 2229057835 + ... + 2229057864.

It is an arithmetic number, because the mean of its divisors is an integer number (13374347100).

Almost surely, 2^66871735485 is an apocalyptic number.

It is an amenable number.

66871735485 is a deficient number, since it is larger than the sum of its proper divisors (40123041315).

66871735485 is a wasteful number, since it uses less digits than its factorization.

66871735485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4458115707.

The product of its digits is 33868800, while the sum is 60.

The spelling of 66871735485 in words is "sixty-six billion, eight hundred seventy-one million, seven hundred thirty-five thousand, four hundred eighty-five".