668335919073 has 16 divisors (see below), whose sum is σ = 893047900800. Its totient is φ = 444591659520.

The previous prime is 668335919063. The next prime is 668335919117. The reversal of 668335919073 is 370919533866.

It is not a de Polignac number, because 668335919073 - 2³⁰ = 667262177249 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 668335918998 and 668335919016.

It is not an unprimeable number, because it can be changed into a prime (668335919063) 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, 2430783 + ... + 2691723.

It is an arithmetic number, because the mean of its divisors is an integer number (55815493800).

Almost surely, 2^668335919073 is an apocalyptic number.

It is an amenable number.

668335919073 is a deficient number, since it is larger than the sum of its proper divisors (224711981727).

668335919073 is a wasteful number, since it uses less digits than its factorization.

668335919073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262792.

The product of its (nonzero) digits is 22044960, while the sum is 60.

The spelling of 668335919073 in words is "six hundred sixty-eight billion, three hundred thirty-five million, nine hundred nineteen thousand, seventy-three".