66868646303 has 16 divisors (see below), whose sum is σ = 71347288320. Its totient is φ = 62488313856.

The previous prime is 66868646219. The next prime is 66868646323. The reversal of 66868646303 is 30364686866.

It is not a de Polignac number, because 66868646303 - 2¹⁰ = 66868645279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66868646323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 987551 + ... + 1053087.

It is an arithmetic number, because the mean of its divisors is an integer number (4459205520).

Almost surely, 2^66868646303 is an apocalyptic number.

66868646303 is a deficient number, since it is larger than the sum of its proper divisors (4478642017).

66868646303 is a wasteful number, since it uses less digits than its factorization.

66868646303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66286.

The product of its (nonzero) digits is 17915904, while the sum is 56.

The spelling of 66868646303 in words is "sixty-six billion, eight hundred sixty-eight million, six hundred forty-six thousand, three hundred three".