12305326531506 has 16 divisors (see below), whose sum is σ = 25680681457344. Its totient is φ = 3923437444784.

The previous prime is 12305326531481. The next prime is 12305326531591. The reversal of 12305326531506 is 60513562350321.

It is a super-2 number, since 2×12305326531506² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 44584516281 + ... + 44584516556.

It is an arithmetic number, because the mean of its divisors is an integer number (1605042591084).

Almost surely, 2^{12305326531506} is an apocalyptic number.

12305326531506 is an abundant number, since it is smaller than the sum of its proper divisors (13375354925838).

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

12305326531506 is a wasteful number, since it uses less digits than its factorization.

12305326531506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89169032865.

The product of its (nonzero) digits is 486000, while the sum is 42.

Adding to 12305326531506 its reverse (60513562350321), we get a palindrome (72818888881827).

The spelling of 12305326531506 in words is "twelve trillion, three hundred five billion, three hundred twenty-six million, five hundred thirty-one thousand, five hundred six".