447117846865 has 16 divisors (see below), whose sum is σ = 541656073296. Its totient is φ = 354288793600.

The previous prime is 447117846841. The next prime is 447117846887. The reversal of 447117846865 is 568648711744.

It can be written as a sum of positive squares in 8 ways, for example, as 84034472769 + 363083374096 = 289887^2 + 602564^2 .

It is not a de Polignac number, because 447117846865 - 2²⁷ = 446983629137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 569595 + ... + 1103935.

It is an arithmetic number, because the mean of its divisors is an integer number (33853504581).

Almost surely, 2^447117846865 is an apocalyptic number.

It is an amenable number.

447117846865 is a deficient number, since it is larger than the sum of its proper divisors (94538226431).

447117846865 is a wasteful number, since it uses less digits than its factorization.

447117846865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535940.

The product of its digits is 36126720, while the sum is 61.

The spelling of 447117846865 in words is "four hundred forty-seven billion, one hundred seventeen million, eight hundred forty-six thousand, eight hundred sixty-five".