66486688668466 has 16 divisors (see below), whose sum is σ = 109143991981728. Its totient is φ = 30124668693600.

The previous prime is 66486688668311. The next prime is 66486688668527.

66486688668466 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4827664380 + ... + 4827678151.

It is an arithmetic number, because the mean of its divisors is an integer number (6821499498858).

Almost surely, 2^{66486688668466} is an apocalyptic number.

66486688668466 is a deficient number, since it is larger than the sum of its proper divisors (42657303313262).

66486688668466 is a wasteful number, since it uses less digits than its factorization.

66486688668466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9655342857.

The product of its digits is 110075314176, while the sum is 88.

The spelling of 66486688668466 in words is "sixty-six trillion, four hundred eighty-six billion, six hundred eighty-eight million, six hundred sixty-eight thousand, four hundred sixty-six".