21055032144344 has 16 divisors (see below), whose sum is σ = 43067111204520. Its totient is φ = 9570469156480.

The previous prime is 21055032144337. The next prime is 21055032144371. The reversal of 21055032144344 is 44344123055012.

It is a junction number, because it is equal to n+sod(n) for n = 21055032144298 and 21055032144307.

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, 119630864369 + ... + 119630864544.

Almost surely, 2^{21055032144344} is an apocalyptic number.

It is an amenable number.

21055032144344 is an abundant number, since it is smaller than the sum of its proper divisors (22012079060176).

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

21055032144344 is a wasteful number, since it uses less digits than its factorization.

21055032144344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239261728930 (or 239261728926 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 38.

Adding to 21055032144344 its reverse (44344123055012), we get a palindrome (65399155199356).

The spelling of 21055032144344 in words is "twenty-one trillion, fifty-five billion, thirty-two million, one hundred forty-four thousand, three hundred forty-four".