20001343121343 has 24 divisors (see below), whose sum is σ = 28917524009088. Its totient is φ = 13321909797072.

The previous prime is 20001343121297. The next prime is 20001343121351. The reversal of 20001343121343 is 34312134310002.

It is a happy number.

20001343121343 is a `hidden beast` number, since 2 + 0 + 0 + 0 + 1 + 3 + 4 + 312 + 1 + 343 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-20001343121343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001343121363) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 143755696 + ... + 143894762.

It is an arithmetic number, because the mean of its divisors is an integer number (1204896833712).

Almost surely, 2^{20001343121343} is an apocalyptic number.

20001343121343 is a deficient number, since it is larger than the sum of its proper divisors (8916180887745).

20001343121343 is a wasteful number, since it uses less digits than its factorization.

20001343121343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153723 (or 153720 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 20001343121343 its reverse (34312134310002), we get a palindrome (54313477431345).

The spelling of 20001343121343 in words is "twenty trillion, one billion, three hundred forty-three million, one hundred twenty-one thousand, three hundred forty-three".