21443541110144 has 32 divisors (see below), whose sum is σ = 42719787747000. Its totient is φ = 10721712028672.

The previous prime is 21443541110083. The next prime is 21443541110171. The reversal of 21443541110144 is 44101114534412.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32108132 + ... + 32769180.

Almost surely, 2^{21443541110144} is an apocalyptic number.

It is an amenable number.

21443541110144 is a deficient number, since it is larger than the sum of its proper divisors (21276246636856).

21443541110144 is an equidigital number, since it uses as much as digits as its factorization.

21443541110144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914490 (or 914478 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 35.

Adding to 21443541110144 its reverse (44101114534412), we get a palindrome (65544655644556).

The spelling of 21443541110144 in words is "twenty-one trillion, four hundred forty-three billion, five hundred forty-one million, one hundred ten thousand, one hundred forty-four".