21445481786080 has 192 divisors, whose sum is σ = 58084778239488. Its totient is φ = 7411134044160.

The previous prime is 21445481786011. The next prime is 21445481786137. The reversal of 21445481786080 is 8068718454412.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1029172 + ... + 6629491.

It is an arithmetic number, because the mean of its divisors is an integer number (302524886664).

Almost surely, 2^{21445481786080} is an apocalyptic number.

21445481786080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21445481786080 is an abundant number, since it is smaller than the sum of its proper divisors (36639296453408).

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

21445481786080 is a wasteful number, since it uses less digits than its factorization.

21445481786080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7658769 (or 7658761 counting only the distinct ones).

The product of its (nonzero) digits is 13762560, while the sum is 58.

The spelling of 21445481786080 in words is "twenty-one trillion, four hundred forty-five billion, four hundred eighty-one million, seven hundred eighty-six thousand, eighty".