21743354226611 has 4 divisors (see below), whose sum is σ = 22205978784672. Its totient is φ = 21280729668552.

The previous prime is 21743354226593. The next prime is 21743354226623. The reversal of 21743354226611 is 11662245334712.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21743354226611 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 462624558013 = 21743354226611 / (2 + 1 + 7 + 4 + 3 + 3 + 5 + 4 + 2 + 2 + 6 + 6 + 1 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21743354226511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231312278960 + ... + 231312279053.

It is an arithmetic number, because the mean of its divisors is an integer number (5551494696168).

Almost surely, 2^{21743354226611} is an apocalyptic number.

21743354226611 is a deficient number, since it is larger than the sum of its proper divisors (462624558061).

21743354226611 is an equidigital number, since it uses as much as digits as its factorization.

21743354226611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462624558060.

The product of its digits is 1451520, while the sum is 47.

The spelling of 21743354226611 in words is "twenty-one trillion, seven hundred forty-three billion, three hundred fifty-four million, two hundred twenty-six thousand, six hundred eleven".