1668718701842 has 16 divisors (see below), whose sum is σ = 2528981381472. Its totient is φ = 825725577600.

The previous prime is 1668718701821. The next prime is 1668718701847. The reversal of 1668718701842 is 2481078178661.

It is not an unprimeable number, because it can be changed into a prime (1668718701847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5288573 + ... + 5595215.

It is an arithmetic number, because the mean of its divisors is an integer number (158061336342).

Almost surely, 2^{1668718701842} is an apocalyptic number.

1668718701842 is a deficient number, since it is larger than the sum of its proper divisors (860262679630).

1668718701842 is a wasteful number, since it uses less digits than its factorization.

1668718701842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334793.

The product of its (nonzero) digits is 7225344, while the sum is 59.

The spelling of 1668718701842 in words is "one trillion, six hundred sixty-eight billion, seven hundred eighteen million, seven hundred one thousand, eight hundred forty-two".