66208642226 has 16 divisors (see below), whose sum is σ = 99412790400. Its totient is φ = 33071066208.

The previous prime is 66208642169. The next prime is 66208642301. The reversal of 66208642226 is 62224680266.

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, 12553526 + ... + 12558798.

It is an arithmetic number, because the mean of its divisors is an integer number (6213299400).

Almost surely, 2^66208642226 is an apocalyptic number.

66208642226 is a deficient number, since it is larger than the sum of its proper divisors (33204148174).

66208642226 is a wasteful number, since it uses less digits than its factorization.

66208642226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10393.

The product of its (nonzero) digits is 663552, while the sum is 44.

The spelling of 66208642226 in words is "sixty-six billion, two hundred eight million, six hundred forty-two thousand, two hundred twenty-six".