21364234225472 has 224 divisors, whose sum is σ = 45643500564480. Its totient is φ = 9892445552640.

The previous prime is 21364234225447. The next prime is 21364234225507. The reversal of 21364234225472 is 27452243246312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3490314572 + ... + 3490320692.

It is an arithmetic number, because the mean of its divisors is an integer number (203765627520).

Almost surely, 2^{21364234225472} 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 21364234225472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22821750282240).

21364234225472 is an abundant number, since it is smaller than the sum of its proper divisors (24279266339008).

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

21364234225472 is a wasteful number, since it uses less digits than its factorization.

21364234225472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6609 (or 6599 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 47.

The spelling of 21364234225472 in words is "twenty-one trillion, three hundred sixty-four billion, two hundred thirty-four million, two hundred twenty-five thousand, four hundred seventy-two".