21550324401441 has 48 divisors (see below), whose sum is σ = 34657994067840. Its totient is φ = 12793384512000.

The previous prime is 21550324401383. The next prime is 21550324401491. The reversal of 21550324401441 is 14410442305512.

21550324401441 is a `hidden beast` number, since 2 + 1 + 5 + 503 + 2 + 4 + 4 + 0 + 144 + 1 = 666.

It is not a de Polignac number, because 21550324401441 - 2⁹ = 21550324400929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21550324401396 and 21550324401405.

It is not an unprimeable number, because it can be changed into a prime (21550324401491) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5948181 + ... + 8858978.

It is an arithmetic number, because the mean of its divisors is an integer number (722041543080).

Almost surely, 2^{21550324401441} is an apocalyptic number.

It is an amenable number.

21550324401441 is a deficient number, since it is larger than the sum of its proper divisors (13107669666399).

21550324401441 is a wasteful number, since it uses less digits than its factorization.

21550324401441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14807478 (or 14807475 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

Adding to 21550324401441 its reverse (14410442305512), we get a palindrome (35960766706953).

The spelling of 21550324401441 in words is "twenty-one trillion, five hundred fifty billion, three hundred twenty-four million, four hundred one thousand, four hundred forty-one".