21741229441 has 8 divisors (see below), whose sum is σ = 22422017024. Its totient is φ = 21068404560.

The previous prime is 21741229423. The next prime is 21741229463. The reversal of 21741229441 is 14492214712.

It is a happy number.

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 21741229441 - 2¹⁷ = 21741098369 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21741229441.

It is not an unprimeable number, because it can be changed into a prime (21741229421) 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, 1985130 + ... + 1996051.

It is an arithmetic number, because the mean of its divisors is an integer number (2802752128).

Almost surely, 2^21741229441 is an apocalyptic number.

It is an amenable number.

21741229441 is a deficient number, since it is larger than the sum of its proper divisors (680787583).

21741229441 is a wasteful number, since it uses less digits than its factorization.

21741229441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3981351.

The product of its digits is 32256, while the sum is 37.

The spelling of 21741229441 in words is "twenty-one billion, seven hundred forty-one million, two hundred twenty-nine thousand, four hundred forty-one".