1668342902168 has 16 divisors (see below), whose sum is σ = 3236009940000. Its totient is φ = 805406918176.

The previous prime is 1668342902153. The next prime is 1668342902431. The reversal of 1668342902168 is 8612092438661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3595566368 + ... + 3595566831.

It is an arithmetic number, because the mean of its divisors is an integer number (202250621250).

Almost surely, 2^{1668342902168} is an apocalyptic number.

It is an amenable number.

1668342902168 is a deficient number, since it is larger than the sum of its proper divisors (1567667037832).

1668342902168 is a wasteful number, since it uses less digits than its factorization.

1668342902168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7191133234 (or 7191133230 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 56.

The spelling of 1668342902168 in words is "one trillion, six hundred sixty-eight billion, three hundred forty-two million, nine hundred two thousand, one hundred sixty-eight".