1668516687002 has 16 divisors (see below), whose sum is σ = 2730551118624. Its totient is φ = 758346930000.

The previous prime is 1668516687001. The next prime is 1668516687011. The reversal of 1668516687002 is 2007866158661.

It is not an unprimeable number, because it can be changed into a prime (1668516687001) 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, 3242249 + ... + 3721452.

It is an arithmetic number, because the mean of its divisors is an integer number (170659444914).

Almost surely, 2^{1668516687002} is an apocalyptic number.

1668516687002 is a deficient number, since it is larger than the sum of its proper divisors (1062034431622).

1668516687002 is a wasteful number, since it uses less digits than its factorization.

1668516687002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6974605.

The product of its (nonzero) digits is 5806080, while the sum is 56.

The spelling of 1668516687002 in words is "one trillion, six hundred sixty-eight billion, five hundred sixteen million, six hundred eighty-seven thousand, two".