12302184457809 has 9 divisors (see below), whose sum is σ = 17769837193563. Its totient is φ = 8201449290312.

The previous prime is 12302184457807. The next prime is 12302184457817. The reversal of 12302184457809 is 90875448120321.

The square root of 12302184457809 is 3507447.

It is a perfect power (a square), and thus also a powerful number.

12302184457809 is a `hidden beast` number, since 1 + 2 + 3 + 0 + 2 + 184 + 457 + 8 + 0 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 391817158209 + 11910367299600 = 625953^2 + 3451140^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 12302184457809 - 2¹ = 12302184457807 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12302184457807) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9937767 + ... + 11106915.

Almost surely, 2^{12302184457809} is an apocalyptic number.

12302184457809 is the 3507447-th square number.

12302184457809 is the 1753724-th centered octagonal number.

It is an amenable number.

12302184457809 is a deficient number, since it is larger than the sum of its proper divisors (5467652735754).

12302184457809 is an frugal number, since it uses more digits than its factorization.

12302184457809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2338304 (or 1169152 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 12302184457809 in words is "twelve trillion, three hundred two billion, one hundred eighty-four million, four hundred fifty-seven thousand, eight hundred nine".