1668385350005 has 16 divisors (see below), whose sum is σ = 2184110668224. Its totient is φ = 1213347511680.

The previous prime is 1668385349977. The next prime is 1668385350007. The reversal of 1668385350005 is 5000535838661.

It is not a de Polignac number, because 1668385350005 - 2⁶ = 1668385349941 is a prime.

It is a super-2 number, since 2×1668385350005² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668385350007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2853809 + ... + 3388361.

It is an arithmetic number, because the mean of its divisors is an integer number (136506916764).

Almost surely, 2^{1668385350005} is an apocalyptic number.

It is an amenable number.

1668385350005 is a deficient number, since it is larger than the sum of its proper divisors (515725318219).

1668385350005 is a wasteful number, since it uses less digits than its factorization.

1668385350005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591316.

The product of its (nonzero) digits is 2592000, while the sum is 50.

The spelling of 1668385350005 in words is "one trillion, six hundred sixty-eight billion, three hundred eighty-five million, three hundred fifty thousand, five".