21445061441 has 8 divisors (see below), whose sum is σ = 22118189184. Its totient is φ = 20780969200.

The previous prime is 21445061411. The next prime is 21445061501. The reversal of 21445061441 is 14416054412.

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 21445061441 - 2¹⁸ = 21444799297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21445061398 and 21445061407.

It is not an unprimeable number, because it can be changed into a prime (21445061401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2254055 + ... + 2263548.

It is an arithmetic number, because the mean of its divisors is an integer number (2764773648).

Almost surely, 2^21445061441 is an apocalyptic number.

It is an amenable number.

21445061441 is a deficient number, since it is larger than the sum of its proper divisors (673127743).

21445061441 is a wasteful number, since it uses less digits than its factorization.

21445061441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4517751.

The product of its (nonzero) digits is 15360, while the sum is 32.

The spelling of 21445061441 in words is "twenty-one billion, four hundred forty-five million, sixty-one thousand, four hundred forty-one".