12530555536 has 40 divisors (see below), whose sum is σ = 24603425280. Its totient is φ = 6181787136.

The previous prime is 12530555497. The next prime is 12530555591. The reversal of 12530555536 is 63555503521.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387645 + ... + 418723.

It is an arithmetic number, because the mean of its divisors is an integer number (615085632).

Almost surely, 2^12530555536 is an apocalyptic number.

12530555536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12530555536 is a deficient number, since it is larger than the sum of its proper divisors (12072869744).

12530555536 is a wasteful number, since it uses less digits than its factorization.

12530555536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31423 (or 31417 counting only the distinct ones).

The product of its (nonzero) digits is 337500, while the sum is 40.

The spelling of 12530555536 in words is "twelve billion, five hundred thirty million, five hundred fifty-five thousand, five hundred thirty-six".