351668668685 has 32 divisors (see below), whose sum is σ = 426292699392. Its totient is φ = 278491530240.

The previous prime is 351668668667. The next prime is 351668668787. The reversal of 351668668685 is 586866866153.

It is not a de Polignac number, because 351668668685 - 2¹⁴ = 351668652301 is a prime.

It is a Smith number, since the sum of its digits (68) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 399169445 + ... + 399170325.

It is an arithmetic number, because the mean of its divisors is an integer number (13321646856).

Almost surely, 2^351668668685 is an apocalyptic number.

It is an amenable number.

351668668685 is a deficient number, since it is larger than the sum of its proper divisors (74624030707).

351668668685 is a wasteful number, since it uses less digits than its factorization.

351668668685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2453.

The product of its digits is 298598400, while the sum is 68.

The spelling of 351668668685 in words is "three hundred fifty-one billion, six hundred sixty-eight million, six hundred sixty-eight thousand, six hundred eighty-five".