447665670520 has 32 divisors (see below), whose sum is σ = 1060260800400. Its totient is φ = 169641727488.

The previous prime is 447665670509. The next prime is 447665670527. The reversal of 447665670520 is 25076566744.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447665670527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 294516129 + ... + 294517648.

Almost surely, 2^447665670520 is an apocalyptic number.

447665670520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

447665670520 is an abundant number, since it is smaller than the sum of its proper divisors (612595129880).

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

447665670520 is a wasteful number, since it uses less digits than its factorization.

447665670520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589033807 (or 589033803 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 52.

The spelling of 447665670520 in words is "four hundred forty-seven billion, six hundred sixty-five million, six hundred seventy thousand, five hundred twenty".