21130045441363 has 2 divisors, whose sum is σ = 21130045441364. Its totient is φ = 21130045441362.

The previous prime is 21130045441259. The next prime is 21130045441397. The reversal of 21130045441363 is 36314454003112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21130045441363 - 2⁹ = 21130045440851 is a prime.

It is not a weakly prime, because it can be changed into another prime (21130045441963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10565022720681 + 10565022720682.

It is an arithmetic number, because the mean of its divisors is an integer number (10565022720682).

Almost surely, 2^{21130045441363} is an apocalyptic number.

21130045441363 is a deficient number, since it is larger than the sum of its proper divisors (1).

21130045441363 is an equidigital number, since it uses as much as digits as its factorization.

21130045441363 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 37.

Adding to 21130045441363 its reverse (36314454003112), we get a palindrome (57444499444475).

The spelling of 21130045441363 in words is "twenty-one trillion, one hundred thirty billion, forty-five million, four hundred forty-one thousand, three hundred sixty-three".