447057808585 has 4 divisors (see below), whose sum is σ = 536469370308. Its totient is φ = 357646246864.

The previous prime is 447057808577. The next prime is 447057808619. The reversal of 447057808585 is 585808750744.

It is a happy number.

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 116736338889 + 330321469696 = 341667^2 + 574736^2 .

It is a cyclic number.

It is not a de Polignac number, because 447057808585 - 2³ = 447057808577 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44705780854 + ... + 44705780863.

It is an arithmetic number, because the mean of its divisors is an integer number (134117342577).

Almost surely, 2^447057808585 is an apocalyptic number.

It is an amenable number.

447057808585 is a deficient number, since it is larger than the sum of its proper divisors (89411561723).

447057808585 is an equidigital number, since it uses as much as digits as its factorization.

447057808585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89411561722.

The product of its (nonzero) digits is 50176000, while the sum is 61.

The spelling of 447057808585 in words is "four hundred forty-seven billion, fifty-seven million, eight hundred eight thousand, five hundred eighty-five".