1668535338337 has 8 divisors (see below), whose sum is σ = 1911202042176. Its totient is φ = 1426944762672.

The previous prime is 1668535338317. The next prime is 1668535338341. The reversal of 1668535338337 is 7338335358661.

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

It is a cyclic number.

It is not a de Polignac number, because 1668535338337 - 2²⁷ = 1668401120609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1668535338317) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 269028718 + ... + 269034919.

It is an arithmetic number, because the mean of its divisors is an integer number (238900255272).

Almost surely, 2^{1668535338337} is an apocalyptic number.

It is an amenable number.

1668535338337 is a deficient number, since it is larger than the sum of its proper divisors (242666703839).

1668535338337 is an equidigital number, since it uses as much as digits as its factorization.

1668535338337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538064087.

The product of its digits is 97977600, while the sum is 61.

The spelling of 1668535338337 in words is "one trillion, six hundred sixty-eight billion, five hundred thirty-five million, three hundred thirty-eight thousand, three hundred thirty-seven".