12326565428 has 12 divisors (see below), whose sum is σ = 22840400772. Its totient is φ = 5800736640.

The previous prime is 12326565401. The next prime is 12326565431. The reversal of 12326565428 is 82456562321.

It can be written as a sum of positive squares in 2 ways, for example, as 10857223204 + 1469342224 = 104198^2 + 38332^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 90636443 + ... + 90636578.

It is an arithmetic number, because the mean of its divisors is an integer number (1903366731).

Almost surely, 2^12326565428 is an apocalyptic number.

It is an amenable number.

12326565428 is a deficient number, since it is larger than the sum of its proper divisors (10513835344).

12326565428 is a wasteful number, since it uses less digits than its factorization.

12326565428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181273042 (or 181273040 counting only the distinct ones).

The product of its digits is 691200, while the sum is 44.

The spelling of 12326565428 in words is "twelve billion, three hundred twenty-six million, five hundred sixty-five thousand, four hundred twenty-eight".