21483491041 has 4 divisors (see below), whose sum is σ = 22064125972. Its totient is φ = 20902856112.

The previous prime is 21483491027. The next prime is 21483491077. The reversal of 21483491041 is 14019438412.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14424970816 + 7058520225 = 120104^2 + 84015^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21483491041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 580634893 = 21483491041 / (2 + 1 + 4 + 8 + 3 + 4 + 9 + 1 + 0 + 4 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21483497041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 290317410 + ... + 290317483.

It is an arithmetic number, because the mean of its divisors is an integer number (5516031493).

Almost surely, 2^21483491041 is an apocalyptic number.

It is an amenable number.

21483491041 is a deficient number, since it is larger than the sum of its proper divisors (580634931).

21483491041 is an equidigital number, since it uses as much as digits as its factorization.

21483491041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580634930.

The product of its (nonzero) digits is 27648, while the sum is 37.

The spelling of 21483491041 in words is "twenty-one billion, four hundred eighty-three million, four hundred ninety-one thousand, forty-one".