12103530556 has 72 divisors (see below), whose sum is σ = 24371383680. Its totient is φ = 5242176576.

The previous prime is 12103530529. The next prime is 12103530559. The reversal of 12103530556 is 65503530121.

12103530556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12103530559) 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 23 ways as a sum of consecutive naturals, for example, 1369905 + ... + 1378711.

It is an arithmetic number, because the mean of its divisors is an integer number (338491440).

Almost surely, 2^12103530556 is an apocalyptic number.

It is an amenable number.

12103530556 is an abundant number, since it is smaller than the sum of its proper divisors (12267853124).

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

12103530556 is a wasteful number, since it uses less digits than its factorization.

12103530556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8963 (or 8948 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 31.

The spelling of 12103530556 in words is "twelve billion, one hundred three million, five hundred thirty thousand, five hundred fifty-six".