1668866835468 has 48 divisors (see below), whose sum is σ = 4464807759104. Its totient is φ = 475265931840.

The previous prime is 1668866835463. The next prime is 1668866835481. The reversal of 1668866835468 is 8645386688661.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1668866835468.

It is not an unprimeable number, because it can be changed into a prime (1668866835463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32331643 + ... + 32383218.

Almost surely, 2^{1668866835468} is an apocalyptic number.

It is an amenable number.

1668866835468 is an abundant number, since it is smaller than the sum of its proper divisors (2795940923636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1668866835468 is a wasteful number, since it uses less digits than its factorization.

1668866835468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64715182 (or 64715180 counting only the distinct ones).

The product of its digits is 1911029760, while the sum is 75.

The spelling of 1668866835468 in words is "one trillion, six hundred sixty-eight billion, eight hundred sixty-six million, eight hundred thirty-five thousand, four hundred sixty-eight".