1668687033367 has 4 divisors (see below), whose sum is σ = 1681425102456. Its totient is φ = 1655948964280.

The previous prime is 1668687033359. The next prime is 1668687033389. The reversal of 1668687033367 is 7633307868661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1668687033367 - 2³ = 1668687033359 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1668687033299 and 1668687033308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668687033347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6369034348 + ... + 6369034609.

It is an arithmetic number, because the mean of its divisors is an integer number (420356275614).

Almost surely, 2^{1668687033367} is an apocalyptic number.

1668687033367 is a deficient number, since it is larger than the sum of its proper divisors (12738069089).

1668687033367 is a wasteful number, since it uses less digits than its factorization.

1668687033367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12738069088.

The product of its (nonzero) digits is 109734912, while the sum is 64.

The spelling of 1668687033367 in words is "one trillion, six hundred sixty-eight billion, six hundred eighty-seven million, thirty-three thousand, three hundred sixty-seven".