21413003441 has 8 divisors (see below), whose sum is σ = 22171682280. Its totient is φ = 20655677952.

The previous prime is 21413003431. The next prime is 21413003467. The reversal of 21413003441 is 14430031412.

It can be written as a sum of positive squares in 4 ways, for example, as 10968163441 + 10444840000 = 104729^2 + 102200^2 .

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 21413003441 - 2¹⁸ = 21412741297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21413003431) 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, 306080 + ... + 369473.

It is an arithmetic number, because the mean of its divisors is an integer number (2771460285).

Almost surely, 2^21413003441 is an apocalyptic number.

It is an amenable number.

21413003441 is a deficient number, since it is larger than the sum of its proper divisors (758678839).

21413003441 is a wasteful number, since it uses less digits than its factorization.

21413003441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676675.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21413003441 its reverse (14430031412), we get a palindrome (35843034853).

The spelling of 21413003441 in words is "twenty-one billion, four hundred thirteen million, three thousand, four hundred forty-one".