21455450302432 has 24 divisors (see below), whose sum is σ = 42288363829152. Its totient is φ = 10715548377600.

The previous prime is 21455450302421. The next prime is 21455450302439. The reversal of 21455450302432 is 23420305455412.

It is a super-2 number, since 2×21455450302432² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21455450302439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380495544 + ... + 380551927.

It is an arithmetic number, because the mean of its divisors is an integer number (1762015159548).

Almost surely, 2^{21455450302432} is an apocalyptic number.

It is an amenable number.

21455450302432 is a deficient number, since it is larger than the sum of its proper divisors (20832913526720).

21455450302432 is an equidigital number, since it uses as much as digits as its factorization.

21455450302432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761048362 (or 761048354 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 40.

Adding to 21455450302432 its reverse (23420305455412), we get a palindrome (44875755757844).

The spelling of 21455450302432 in words is "twenty-one trillion, four hundred fifty-five billion, four hundred fifty million, three hundred two thousand, four hundred thirty-two".