1668370333687 has 8 divisors (see below), whose sum is σ = 1682817878016. Its totient is φ = 1653943270392.

The previous prime is 1668370333649. The next prime is 1668370333711. The reversal of 1668370333687 is 7863330738661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1668370333687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668370333187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4956613 + ... + 5282494.

It is an arithmetic number, because the mean of its divisors is an integer number (210352234752).

Almost surely, 2^{1668370333687} is an apocalyptic number.

1668370333687 is a deficient number, since it is larger than the sum of its proper divisors (14447544329).

1668370333687 is a wasteful number, since it uses less digits than its factorization.

1668370333687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10240517.

The product of its (nonzero) digits is 54867456, while the sum is 61.

The spelling of 1668370333687 in words is "one trillion, six hundred sixty-eight billion, three hundred seventy million, three hundred thirty-three thousand, six hundred eighty-seven".