19800103143943 has 2 divisors, whose sum is σ = 19800103143944. Its totient is φ = 19800103143942.

The previous prime is 19800103143941. The next prime is 19800103143967. The reversal of 19800103143943 is 34934130100891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19800103143943 - 2¹ = 19800103143941 is a prime.

Together with 19800103143941, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 19800103143893 and 19800103143902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19800103143941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9900051571971 + 9900051571972.

It is an arithmetic number, because the mean of its divisors is an integer number (9900051571972).

Almost surely, 2^{19800103143943} is an apocalyptic number.

19800103143943 is a deficient number, since it is larger than the sum of its proper divisors (1).

19800103143943 is an equidigital number, since it uses as much as digits as its factorization.

19800103143943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 46.

The spelling of 19800103143943 in words is "nineteen trillion, eight hundred billion, one hundred three million, one hundred forty-three thousand, nine hundred forty-three".