1668518550337 has 8 divisors (see below), whose sum is σ = 1681855936992. Its totient is φ = 1655190264000.

The previous prime is 1668518550317. The next prime is 1668518550343. The reversal of 1668518550337 is 7330558158661.

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 1668518550337 - 2¹⁵ = 1668518517569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1668518550317) 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, 1906683 + ... + 2640544.

It is an arithmetic number, because the mean of its divisors is an integer number (210231992124).

Almost surely, 2^{1668518550337} is an apocalyptic number.

It is an amenable number.

1668518550337 is a deficient number, since it is larger than the sum of its proper divisors (13337386655).

1668518550337 is a wasteful number, since it uses less digits than its factorization.

1668518550337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4550159.

The product of its (nonzero) digits is 18144000, while the sum is 58.

The spelling of 1668518550337 in words is "one trillion, six hundred sixty-eight billion, five hundred eighteen million, five hundred fifty thousand, three hundred thirty-seven".