447897584385 has 24 divisors (see below), whose sum is σ = 776476255464. Its totient is φ = 238841652480.

The previous prime is 447897584369. The next prime is 447897584417. The reversal of 447897584385 is 583485798744.

It is a happy number.

447897584385 is a `hidden beast` number, since 4 + 4 + 7 + 8 + 9 + 7 + 584 + 38 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2945884176 + 444951700209 = 54276^2 + 667047^2 .

It is not a de Polignac number, because 447897584385 - 2⁴ = 447897584369 is a prime.

It is a super-2 number, since 2×447897584385² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 477546 + ... + 1060115.

It is an arithmetic number, because the mean of its divisors is an integer number (32353177311).

Almost surely, 2^447897584385 is an apocalyptic number.

447897584385 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

447897584385 is a deficient number, since it is larger than the sum of its proper divisors (328578671079).

447897584385 is a wasteful number, since it uses less digits than its factorization.

447897584385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544145 (or 1544142 counting only the distinct ones).

The product of its digits is 1083801600, while the sum is 72.

The spelling of 447897584385 in words is "four hundred forty-seven billion, eight hundred ninety-seven million, five hundred eighty-four thousand, three hundred eighty-five".