447747322144520 has 16 divisors (see below), whose sum is σ = 1007431474825260. Its totient is φ = 179098928857792.

The previous prime is 447747322144513. The next prime is 447747322144531. The reversal of 447747322144520 is 25441223747744.

It can be written as a sum of positive squares in 2 ways, for example, as 443868966967204 + 3878355177316 = 21068198^2 + 1969354^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5596841526767 + ... + 5596841526846.

Almost surely, 2^{447747322144520} is an apocalyptic number.

447747322144520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

447747322144520 is an abundant number, since it is smaller than the sum of its proper divisors (559684152680740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

447747322144520 is a wasteful number, since it uses less digits than its factorization.

447747322144520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11193683053624 (or 11193683053620 counting only the distinct ones).

The product of its (nonzero) digits is 42147840, while the sum is 56.

The spelling of 447747322144520 in words is "four hundred forty-seven trillion, seven hundred forty-seven billion, three hundred twenty-two million, one hundred forty-four thousand, five hundred twenty".