21723722211743 has 8 divisors (see below), whose sum is σ = 22186335986112. Its totient is φ = 21261125392416.

The previous prime is 21723722211713. The next prime is 21723722211749. The reversal of 21723722211743 is 34711222732712.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21723722211743 - 2¹⁰ = 21723722210719 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21723722211694 and 21723722211703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21723722211749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1632080 + ... + 6790517.

It is an arithmetic number, because the mean of its divisors is an integer number (2773291998264).

Almost surely, 2^{21723722211743} is an apocalyptic number.

21723722211743 is a deficient number, since it is larger than the sum of its proper divisors (462613774369).

21723722211743 is an equidigital number, since it uses as much as digits as its factorization.

21723722211743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8477521.

The product of its digits is 395136, while the sum is 44.

The spelling of 21723722211743 in words is "twenty-one trillion, seven hundred twenty-three billion, seven hundred twenty-two million, two hundred eleven thousand, seven hundred forty-three".