66895059866 has 16 divisors (see below), whose sum is σ = 104532180480. Its totient is φ = 32078653920.

The previous prime is 66895059841. The next prime is 66895059877.

66895059866 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 66895059796 and 66895059805.

It is an unprimeable number.

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, 6908666 + ... + 6918341.

It is an arithmetic number, because the mean of its divisors is an integer number (6533261280).

Almost surely, 2^66895059866 is an apocalyptic number.

66895059866 is a deficient number, since it is larger than the sum of its proper divisors (37637120614).

66895059866 is a wasteful number, since it uses less digits than its factorization.

66895059866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13827109.

The product of its (nonzero) digits is 167961600, while the sum is 68.

The spelling of 66895059866 in words is "sixty-six billion, eight hundred ninety-five million, fifty-nine thousand, eight hundred sixty-six".