66600226209 has 32 divisors (see below), whose sum is σ = 98752790016. Its totient is φ = 39585870720.

The previous prime is 66600226169. The next prime is 66600226211. The reversal of 66600226209 is 90262200666.

It is not a de Polignac number, because 66600226209 - 2¹¹ = 66600224161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66600226009) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 435549 + ... + 568245.

It is an arithmetic number, because the mean of its divisors is an integer number (3086024688).

Almost surely, 2^66600226209 is an apocalyptic number.

It is an amenable number.

66600226209 is a deficient number, since it is larger than the sum of its proper divisors (32152563807).

66600226209 is a wasteful number, since it uses less digits than its factorization.

66600226209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133005.

The product of its (nonzero) digits is 93312, while the sum is 39.

The spelling of 66600226209 in words is "sixty-six billion, six hundred million, two hundred twenty-six thousand, two hundred nine".