21440550001104 has 120 divisors (see below), whose sum is σ = 64724853950120. Its totient is φ = 6586329977856.

The previous prime is 21440550001069. The next prime is 21440550001147. The reversal of 21440550001104 is 40110005504412.

21440550001104 is a `hidden beast` number, since 2 + 1 + 4 + 4 + 0 + 550 + 0 + 0 + 1 + 104 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 131056704 + 21440418944400 = 11448^2 + 4630380^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8194459 + ... + 10489530.

Almost surely, 2^{21440550001104} is an apocalyptic number.

21440550001104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21440550001104 is an abundant number, since it is smaller than the sum of its proper divisors (43284303949016).

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

21440550001104 is a wasteful number, since it uses less digits than its factorization.

21440550001104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18684629 (or 18684620 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 21440550001104 its reverse (40110005504412), we get a palindrome (61550555505516).

The spelling of 21440550001104 in words is "twenty-one trillion, four hundred forty billion, five hundred fifty million, one thousand, one hundred four".