20942841084343 has 2 divisors, whose sum is σ = 20942841084344. Its totient is φ = 20942841084342.

The previous prime is 20942841084317. The next prime is 20942841084479. The reversal of 20942841084343 is 34348014824902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20942841084343 - 2⁹ = 20942841083831 is a prime.

It is a super-3 number, since 3×20942841084343³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20942841085343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10471420542171 + 10471420542172.

It is an arithmetic number, because the mean of its divisors is an integer number (10471420542172).

Almost surely, 2^{20942841084343} is an apocalyptic number.

20942841084343 is a deficient number, since it is larger than the sum of its proper divisors (1).

20942841084343 is an equidigital number, since it uses as much as digits as its factorization.

20942841084343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5308416, while the sum is 52.

The spelling of 20942841084343 in words is "twenty trillion, nine hundred forty-two billion, eight hundred forty-one million, eighty-four thousand, three hundred forty-three".