21244414032 has 60 divisors (see below), whose sum is σ = 59981048244. Its totient is φ = 7018798080.

The previous prime is 21244414003. The next prime is 21244414091. The reversal of 21244414032 is 23041444212.

21244414032 is a `hidden beast` number, since 2 + 1 + 244 + 414 + 0 + 3 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 859427856 + 20384986176 = 29316^2 + 142776^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21244413987 and 21244414005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 636519 + ... + 669062.

Almost surely, 2^21244414032 is an apocalyptic number.

It is an amenable number.

21244414032 is an abundant number, since it is smaller than the sum of its proper divisors (38736634212).

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

21244414032 is a wasteful number, since it uses less digits than its factorization.

21244414032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305708 (or 1305699 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 21244414032 its reverse (23041444212), we get a palindrome (44285858244).

The spelling of 21244414032 in words is "twenty-one billion, two hundred forty-four million, four hundred fourteen thousand, thirty-two".