20405119788343 has 2 divisors, whose sum is σ = 20405119788344. Its totient is φ = 20405119788342.

The previous prime is 20405119788329. The next prime is 20405119788409. The reversal of 20405119788343 is 34388791150402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20405119788343 - 2³³ = 20396529853751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20405119788043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10202559894171 + 10202559894172.

It is an arithmetic number, because the mean of its divisors is an integer number (10202559894172).

Almost surely, 2^{20405119788343} is an apocalyptic number.

20405119788343 is a deficient number, since it is larger than the sum of its proper divisors (1).

20405119788343 is an equidigital number, since it uses as much as digits as its factorization.

20405119788343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5806080, while the sum is 55.

The spelling of 20405119788343 in words is "twenty trillion, four hundred five billion, one hundred nineteen million, seven hundred eighty-eight thousand, three hundred forty-three".