21041115544304 has 20 divisors (see below), whose sum is σ = 41088162641664. Its totient is φ = 10437718733568.

The previous prime is 21041115544301. The next prime is 21041115544313. The reversal of 21041115544304 is 40344551114012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21041115544301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5177437817 + ... + 5177441880.

Almost surely, 2^{21041115544304} is an apocalyptic number.

It is an amenable number.

21041115544304 is a deficient number, since it is larger than the sum of its proper divisors (20047047097360).

21041115544304 is a wasteful number, since it uses less digits than its factorization.

21041115544304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10354879832 (or 10354879826 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

Adding to 21041115544304 its reverse (40344551114012), we get a palindrome (61385666658316).

The spelling of 21041115544304 in words is "twenty-one trillion, forty-one billion, one hundred fifteen million, five hundred forty-four thousand, three hundred four".