21445202340000 has 360 divisors, whose sum is σ = 80217485187840. Its totient is φ = 5417734464000.

The previous prime is 21445202339989. The next prime is 21445202340011. The reversal of 21445202340000 is 4320254412.

21445202340000 is a `hidden beast` number, since 2 + 14 + 45 + 202 + 3 + 400 + 0 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (21445202339989) and next prime (21445202340011).

It is a tau number, because it is divible by the number of its divisors (360).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 284737 + ... + 6555263.

It is an arithmetic number, because the mean of its divisors is an integer number (222826347744).

Almost surely, 2^{21445202340000} is an apocalyptic number.

21445202340000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21445202340000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40108742593920).

21445202340000 is an abundant number, since it is smaller than the sum of its proper divisors (58772282847840).

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

21445202340000 is a wasteful number, since it uses less digits than its factorization.

21445202340000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6270582 (or 6270556 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 21445202340000 its reverse (4320254412), we get a palindrome (21449522594412).

The spelling of 21445202340000 in words is "twenty-one trillion, four hundred forty-five billion, two hundred two million, three hundred forty thousand".