447785508668 has 12 divisors (see below), whose sum is σ = 808902854592. Its totient is φ = 216670407360.

The previous prime is 447785508649. The next prime is 447785508689. The reversal of 447785508668 is 866805587744.

It is a junction number, because it is equal to n+sod(n) for n = 447785508598 and 447785508607.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1805586605 + ... + 1805586852.

It is an arithmetic number, because the mean of its divisors is an integer number (67408571216).

Almost surely, 2^447785508668 is an apocalyptic number.

It is an amenable number.

447785508668 is a deficient number, since it is larger than the sum of its proper divisors (361117345924).

447785508668 is a wasteful number, since it uses less digits than its factorization.

447785508668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3611173492 (or 3611173490 counting only the distinct ones).

The product of its (nonzero) digits is 361267200, while the sum is 68.

The spelling of 447785508668 in words is "four hundred forty-seven billion, seven hundred eighty-five million, five hundred eight thousand, six hundred sixty-eight".