12302843522 has 18 divisors (see below), whose sum is σ = 18653795433. Its totient is φ = 6085618152.

The previous prime is 12302843521. The next prime is 12302843557. The reversal of 12302843522 is 22534820321.

It can be written as a sum of positive squares in 2 ways, for example, as 7944335161 + 4358508361 = 89131^2 + 66019^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=78431.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12302843521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 16783868 + ... + 16784600.

Almost surely, 2^12302843522 is an apocalyptic number.

12302843522 is a deficient number, since it is larger than the sum of its proper divisors (6350951911).

12302843522 is an frugal number, since it uses more digits than its factorization.

12302843522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1682 (or 842 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

Multiplying 12302843522 by its sum of digits (32), we get a square (393690992704 = 627448²).

The spelling of 12302843522 in words is "twelve billion, three hundred two million, eight hundred forty-three thousand, five hundred twenty-two".