21410205004524 has 288 divisors, whose sum is σ = 60243853372416. Its totient is φ = 5897519953920.

The previous prime is 21410205004457. The next prime is 21410205004543. The reversal of 21410205004524 is 42540050201412.

It is a junction number, because it is equal to n+sod(n) for n = 21410205004491 and 21410205004500.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 509006454 + ... + 509048514.

It is an arithmetic number, because the mean of its divisors is an integer number (209180046432).

Almost surely, 2^{21410205004524} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21410205004524, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30121926686208).

21410205004524 is an abundant number, since it is smaller than the sum of its proper divisors (38833648367892).

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

21410205004524 is a wasteful number, since it uses less digits than its factorization.

21410205004524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42405 (or 42396 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

Adding to 21410205004524 its reverse (42540050201412), we get a palindrome (63950255205936).

The spelling of 21410205004524 in words is "twenty-one trillion, four hundred ten billion, two hundred five million, four thousand, five hundred twenty-four".