12523304000000 has 140 divisors (see below), whose sum is σ = 31277305153182. Its totient is φ = 5009318400000.

The previous prime is 12523303999991. The next prime is 12523304000017. The reversal of 12523304000000 is 40332521.

It is a happy number.

It can be written as a sum of positive squares in 7 ways, for example, as 2955813685504 + 9567490314496 = 1719248^2 + 3093136^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

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 13 ways as a sum of consecutive naturals, for example, 7217294 + ... + 8782706.

Almost surely, 2^{12523304000000} is an apocalyptic number.

12523304000000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12523304000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15638652576591).

12523304000000 is an abundant number, since it is smaller than the sum of its proper divisors (18754001153182).

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

12523304000000 is an frugal number, since it uses more digits than its factorization.

12523304000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1565461 (or 1565420 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 12523304000000 its reverse (40332521), we get a palindrome (12523344332521).

The spelling of 12523304000000 in words is "twelve trillion, five hundred twenty-three billion, three hundred four million", and thus it is an aban number.