21743354230071 has 16 divisors (see below), whose sum is σ = 30721599523584. Its totient is φ = 13631733624704.

The previous prime is 21743354230067. The next prime is 21743354230099. The reversal of 21743354230071 is 17003245334712.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21743354230071 - 2² = 21743354230067 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21743354230471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174238641 + ... + 174363386.

It is an arithmetic number, because the mean of its divisors is an integer number (1920099970224).

Almost surely, 2^{21743354230071} is an apocalyptic number.

21743354230071 is a deficient number, since it is larger than the sum of its proper divisors (8978245293513).

21743354230071 is a wasteful number, since it uses less digits than its factorization.

21743354230071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348603270.

The product of its (nonzero) digits is 423360, while the sum is 42.

Adding to 21743354230071 its reverse (17003245334712), we get a palindrome (38746599564783).

The spelling of 21743354230071 in words is "twenty-one trillion, seven hundred forty-three billion, three hundred fifty-four million, two hundred thirty thousand, seventy-one".