447931788066 has 48 divisors (see below), whose sum is σ = 1109217844800. Its totient is φ = 127974347424.

The previous prime is 447931788049. The next prime is 447931788077. The reversal of 447931788066 is 660887139744.

447931788066 is a `hidden beast` number, since 4 + 479 + 31 + 78 + 8 + 0 + 66 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 447931787994 and 447931788012.

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, 2973040 + ... + 3120068.

It is an arithmetic number, because the mean of its divisors is an integer number (23108705100).

Almost surely, 2^447931788066 is an apocalyptic number.

447931788066 is an abundant number, since it is smaller than the sum of its proper divisors (661286056734).

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

447931788066 is a wasteful number, since it uses less digits than its factorization.

447931788066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171223 (or 171220 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 63.

The spelling of 447931788066 in words is "four hundred forty-seven billion, nine hundred thirty-one million, seven hundred eighty-eight thousand, sixty-six".