447660424146641 has 4 divisors (see below), whose sum is σ = 473993390272932. Its totient is φ = 421327458020352.

The previous prime is 447660424146587. The next prime is 447660424146659. The reversal of 447660424146641 is 146641424066744.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 341350714511041 + 106309709635600 = 18475679^2 + 10310660^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-447660424146641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (447660424146541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13166483063120 + ... + 13166483063153.

It is an arithmetic number, because the mean of its divisors is an integer number (118498347568233).

Almost surely, 2^{447660424146641} is an apocalyptic number.

It is an amenable number.

447660424146641 is a deficient number, since it is larger than the sum of its proper divisors (26332966126291).

447660424146641 is a wasteful number, since it uses less digits than its factorization.

447660424146641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26332966126290.

The product of its (nonzero) digits is 74317824, while the sum is 59.

The spelling of 447660424146641 in words is "four hundred forty-seven trillion, six hundred sixty billion, four hundred twenty-four million, one hundred forty-six thousand, six hundred forty-one".