66731747105 has 8 divisors (see below), whose sum is σ = 80133753600. Its totient is φ = 53348292976.

The previous prime is 66731747077. The next prime is 66731747143. The reversal of 66731747105 is 50174713766.

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

It is a cyclic number.

It is not a de Polignac number, because 66731747105 - 2²⁴ = 66714969889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66731747105.

It is an unprimeable number.

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, 4630175 + ... + 4644564.

It is an arithmetic number, because the mean of its divisors is an integer number (10016719200).

Almost surely, 2^66731747105 is an apocalyptic number.

It is an amenable number.

66731747105 is a deficient number, since it is larger than the sum of its proper divisors (13402006495).

66731747105 is a wasteful number, since it uses less digits than its factorization.

66731747105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9276183.

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

The spelling of 66731747105 in words is "sixty-six billion, seven hundred thirty-one million, seven hundred forty-seven thousand, one hundred five".