447564465745 has 4 divisors (see below), whose sum is σ = 537077358900. Its totient is φ = 358051572592.

The previous prime is 447564465743. The next prime is 447564465779. The reversal of 447564465745 is 547564465744.

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 242390798224 + 205173667521 = 492332^2 + 452961^2 .

It is a cyclic number.

It is not a de Polignac number, because 447564465745 - 2¹ = 447564465743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (447564465743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44756446570 + ... + 44756446579.

It is an arithmetic number, because the mean of its divisors is an integer number (134269339725).

Almost surely, 2^447564465745 is an apocalyptic number.

It is an amenable number.

447564465745 is a deficient number, since it is larger than the sum of its proper divisors (89512893155).

447564465745 is an equidigital number, since it uses as much as digits as its factorization.

447564465745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89512893154.

The product of its digits is 225792000, while the sum is 61.

Subtracting 447564465745 from its reverse (547564465744), we obtain a palindrome (99999999999).

The spelling of 447564465745 in words is "four hundred forty-seven billion, five hundred sixty-four million, four hundred sixty-five thousand, seven hundred forty-five".