21743355051427 has 2 divisors, whose sum is σ = 21743355051428. Its totient is φ = 21743355051426.

The previous prime is 21743355051371. The next prime is 21743355051437. The reversal of 21743355051427 is 72415055334712.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21743355051427 is a prime.

It is not a weakly prime, because it can be changed into another prime (21743355051437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10871677525713 + 10871677525714.

It is an arithmetic number, because the mean of its divisors is an integer number (10871677525714).

Almost surely, 2^{21743355051427} is an apocalyptic number.

21743355051427 is a deficient number, since it is larger than the sum of its proper divisors (1).

21743355051427 is an equidigital number, since it uses as much as digits as its factorization.

21743355051427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528000, while the sum is 49.

The spelling of 21743355051427 in words is "twenty-one trillion, seven hundred forty-three billion, three hundred fifty-five million, fifty-one thousand, four hundred twenty-seven".