21434045032 has 32 divisors (see below), whose sum is σ = 40961781000. Its totient is φ = 10511048704.

The previous prime is 21434044997. The next prime is 21434045033. The reversal of 21434045032 is 23054043412.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19851119236 + 1582925796 = 140894^2 + 39786^2 .

It is not an unprimeable number, because it can be changed into a prime (21434045033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1455048 + ... + 1469704.

Almost surely, 2^21434045032 is an apocalyptic number.

It is an amenable number.

21434045032 is a deficient number, since it is larger than the sum of its proper divisors (19527735968).

21434045032 is a wasteful number, since it uses less digits than its factorization.

21434045032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18165 (or 18161 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 21434045032 its reverse (23054043412), we get a palindrome (44488088444).

The spelling of 21434045032 in words is "twenty-one billion, four hundred thirty-four million, forty-five thousand, thirty-two".