21410545304243 has 16 divisors (see below), whose sum is σ = 21859063056000. Its totient is φ = 20964937640640.

The previous prime is 21410545304233. The next prime is 21410545304297. The reversal of 21410545304243 is 34240354501412.

It is a cyclic number.

It is not a de Polignac number, because 21410545304243 - 2³⁴ = 21393365435059 is a prime.

It is a super-2 number, since 2×21410545304243² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21410545304197 and 21410545304206.

It is not an unprimeable number, because it can be changed into a prime (21410545304233) by changing a digit.

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, 44507480 + ... + 44985962.

It is an arithmetic number, because the mean of its divisors is an integer number (1366191441000).

Almost surely, 2^{21410545304243} is an apocalyptic number.

21410545304243 is a deficient number, since it is larger than the sum of its proper divisors (448517751757).

21410545304243 is a wasteful number, since it uses less digits than its factorization.

21410545304243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481522.

The product of its (nonzero) digits is 230400, while the sum is 38.

Adding to 21410545304243 its reverse (34240354501412), we get a palindrome (55650899805655).

The spelling of 21410545304243 in words is "twenty-one trillion, four hundred ten billion, five hundred forty-five million, three hundred four thousand, two hundred forty-three".