21634545412230 has 32 divisors (see below), whose sum is σ = 51923128485600. Its totient is φ = 5769187721472.

The previous prime is 21634545412217. The next prime is 21634545412387. The reversal of 21634545412230 is 3221454543612.

It is a congruent number.

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, 6359026 + ... + 9149114.

It is an arithmetic number, because the mean of its divisors is an integer number (1622597765175).

Almost surely, 2^{21634545412230} is an apocalyptic number.

21634545412230 is an abundant number, since it is smaller than the sum of its proper divisors (30288583073370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21634545412230 is a wasteful number, since it uses less digits than its factorization.

21634545412230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3048568.

The product of its (nonzero) digits is 691200, while the sum is 42.

Adding to 21634545412230 its reverse (3221454543612), we get a palindrome (24855999955842).

The spelling of 21634545412230 in words is "twenty-one trillion, six hundred thirty-four billion, five hundred forty-five million, four hundred twelve thousand, two hundred thirty".