21043402410 has 32 divisors (see below), whose sum is σ = 51332107392. Its totient is φ = 5519580480.

The previous prime is 21043402403. The next prime is 21043402433. The reversal of 21043402410 is 1420434012.

21043402410 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5747734 + ... + 5751393.

It is an arithmetic number, because the mean of its divisors is an integer number (1604128356).

Almost surely, 2^21043402410 is an apocalyptic number.

21043402410 is an abundant number, since it is smaller than the sum of its proper divisors (30288704982).

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

21043402410 is a wasteful number, since it uses less digits than its factorization.

21043402410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11499198.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 21043402410 its reverse (1420434012), we get a palindrome (22463836422).

The spelling of 21043402410 in words is "twenty-one billion, forty-three million, four hundred two thousand, four hundred ten".