1993144320001 has 8 divisors (see below), whose sum is σ = 1998854668800. Its totient is φ = 1987434852000.

The previous prime is 1993144319923. The next prime is 1993144320067. The reversal of 1993144320001 is 1000234413991.

It is a happy number.

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 1993144320001 - 2²³ = 1993135931393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1993144327001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4453840 + ... + 4880878.

It is an arithmetic number, because the mean of its divisors is an integer number (249856833600).

Almost surely, 2^{1993144320001} is an apocalyptic number.

It is an amenable number.

1993144320001 is a deficient number, since it is larger than the sum of its proper divisors (5710348799).

1993144320001 is a wasteful number, since it uses less digits than its factorization.

1993144320001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440399.

The product of its (nonzero) digits is 23328, while the sum is 37.

Adding to 1993144320001 its reverse (1000234413991), we get a palindrome (2993378733992).

The spelling of 1993144320001 in words is "one trillion, nine hundred ninety-three billion, one hundred forty-four million, three hundred twenty thousand, one".