1668685200337 has 6 divisors (see below), whose sum is σ = 1772617150838. Its totient is φ = 1570527247104.

The previous prime is 1668685200323. The next prime is 1668685200383. The reversal of 1668685200337 is 7330025868661.

It can be written as a sum of positive squares in 3 ways, for example, as 912940119441 + 755745080896 = 955479^2 + 869336^2 .

It is not a de Polignac number, because 1668685200337 - 2¹⁹ = 1668684676049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1668685206337) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2886998328 + ... + 2886998905.

Almost surely, 2^{1668685200337} is an apocalyptic number.

1668685200337 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1668685200337 is a deficient number, since it is larger than the sum of its proper divisors (103931950501).

1668685200337 is an equidigital number, since it uses as much as digits as its factorization.

1668685200337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5773997267 (or 5773997250 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 55.

The spelling of 1668685200337 in words is "one trillion, six hundred sixty-eight billion, six hundred eighty-five million, two hundred thousand, three hundred thirty-seven".