12123523613 has 16 divisors (see below), whose sum is σ = 12334633344. Its totient is φ = 11914620480.

The previous prime is 12123523549. The next prime is 12123523627. The reversal of 12123523613 is 31632532121.

It is a happy number.

12123523613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12123523613 - 2⁶ = 12123523549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12123523513) 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 in 15 ways as a sum of consecutive naturals, for example, 10264883 + ... + 10266063.

It is an arithmetic number, because the mean of its divisors is an integer number (770914584).

Almost surely, 2^12123523613 is an apocalyptic number.

It is an amenable number.

12123523613 is a deficient number, since it is larger than the sum of its proper divisors (211109731).

12123523613 is a wasteful number, since it uses less digits than its factorization.

12123523613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1972.

The product of its digits is 6480, while the sum is 29.

The spelling of 12123523613 in words is "twelve billion, one hundred twenty-three million, five hundred twenty-three thousand, six hundred thirteen".