12523813156 has 6 divisors (see below), whose sum is σ = 21916673030. Its totient is φ = 6261906576.

The previous prime is 12523813153. The next prime is 12523813171. The reversal of 12523813156 is 65131832521.

12523813156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11783102500 + 740710656 = 108550^2 + 27216^2 .

It is not an unprimeable number, because it can be changed into a prime (12523813151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1565476641 + ... + 1565476648.

Almost surely, 2^12523813156 is an apocalyptic number.

It is an amenable number.

12523813156 is a deficient number, since it is larger than the sum of its proper divisors (9392859874).

12523813156 is a wasteful number, since it uses less digits than its factorization.

12523813156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3130953293 (or 3130953291 counting only the distinct ones).

The product of its digits is 43200, while the sum is 37.

It can be divided in two parts, 1252381315 and 6, that added together give a square (1252381321 = 35389²).

The spelling of 12523813156 in words is "twelve billion, five hundred twenty-three million, eight hundred thirteen thousand, one hundred fifty-six".