21130045441305 has 16 divisors (see below), whose sum is σ = 33839060883264. Its totient is φ = 11259028176320.

The previous prime is 21130045441259. The next prime is 21130045441363. The reversal of 21130045441305 is 50314454003112.

It is not a de Polignac number, because 21130045441305 - 2⁸ = 21130045441049 is a prime.

It is a super-2 number, since 2×21130045441305² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 645570114 + ... + 645602843.

It is an arithmetic number, because the mean of its divisors is an integer number (2114941305204).

Almost surely, 2^{21130045441305} is an apocalyptic number.

It is an amenable number.

21130045441305 is a deficient number, since it is larger than the sum of its proper divisors (12709015441959).

21130045441305 is a wasteful number, since it uses less digits than its factorization.

21130045441305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291174056.

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 21130045441305 its reverse (50314454003112), we get a palindrome (71444499444417).

The spelling of 21130045441305 in words is "twenty-one trillion, one hundred thirty billion, forty-five million, four hundred forty-one thousand, three hundred five".