21342411424352 has 96 divisors (see below), whose sum is σ = 44311950033120. Its totient is φ = 10090691665920.

The previous prime is 21342411424351. The next prime is 21342411424417. The reversal of 21342411424352 is 25342411424312.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21342411424351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1493200118 + ... + 1493214410.

It is an arithmetic number, because the mean of its divisors is an integer number (461582812845).

Almost surely, 2^{21342411424352} 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 21342411424352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22155975016560).

21342411424352 is an abundant number, since it is smaller than the sum of its proper divisors (22969538608768).

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

21342411424352 is a wasteful number, since it uses less digits than its factorization.

21342411424352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18736 (or 18728 counting only the distinct ones).

The product of its digits is 184320, while the sum is 38.

Adding to 21342411424352 its reverse (25342411424312), we get a palindrome (46684822848664).

The spelling of 21342411424352 in words is "twenty-one trillion, three hundred forty-two billion, four hundred eleven million, four hundred twenty-four thousand, three hundred fifty-two".