1668352020200 has 48 divisors (see below), whose sum is σ = 3879299794860. Its totient is φ = 667275200000.

The previous prime is 1668352020191. The next prime is 1668352020241. The reversal of 1668352020200 is 20202538661.

It can be written as a sum of positive squares in 6 ways, for example, as 1536424704676 + 131927315524 = 1239526^2 + 363218^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1655300 + ... + 2465100.

Almost surely, 2^{1668352020200} is an apocalyptic number.

1668352020200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1668352020200 is an abundant number, since it is smaller than the sum of its proper divisors (2210947774660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1668352020200 is a wasteful number, since it uses less digits than its factorization.

1668352020200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820118 (or 820109 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

Adding to 1668352020200 its reverse (20202538661), we get a palindrome (1688554558861).

The spelling of 1668352020200 in words is "one trillion, six hundred sixty-eight billion, three hundred fifty-two million, twenty thousand, two hundred".