475216009209 has 24 divisors (see below), whose sum is σ = 693901528320. Its totient is φ = 313369013088.

The previous prime is 475216009199. The next prime is 475216009273. The reversal of 475216009209 is 902900612574.

475216009209 is a `hidden beast` number, since 47 + 521 + 60 + 0 + 9 + 20 + 9 = 666.

It is not a de Polignac number, because 475216009209 - 2¹⁶ = 475215943673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (475216009109) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 163224 + ... + 988470.

It is an arithmetic number, because the mean of its divisors is an integer number (28912563680).

Almost surely, 2^475216009209 is an apocalyptic number.

It is an amenable number.

475216009209 is a deficient number, since it is larger than the sum of its proper divisors (218685519111).

475216009209 is a wasteful number, since it uses less digits than its factorization.

475216009209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825949 (or 825946 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 475216009209 in words is "four hundred seventy-five billion, two hundred sixteen million, nine thousand, two hundred nine".