447815685448 has 32 divisors (see below), whose sum is σ = 889119738360. Its totient is φ = 210719278080.

The previous prime is 447815685437. The next prime is 447815685479. The reversal of 447815685448 is 844586518744.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 446787970084 + 1027715364 = 668422^2 + 32058^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 447815685448.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1584838 + ... + 1845898.

Almost surely, 2^447815685448 is an apocalyptic number.

It is an amenable number.

447815685448 is a deficient number, since it is larger than the sum of its proper divisors (441304052912).

447815685448 is a wasteful number, since it uses less digits than its factorization.

447815685448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273697 (or 273693 counting only the distinct ones).

The product of its digits is 137625600, while the sum is 64.

The spelling of 447815685448 in words is "four hundred forty-seven billion, eight hundred fifteen million, six hundred eighty-five thousand, four hundred forty-eight".