12533444530 has 8 divisors (see below), whose sum is σ = 22560200172. Its totient is φ = 5013377808.

The previous prime is 12533444527. The next prime is 12533444543. The reversal of 12533444530 is 3544433521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11323726569 + 1209717961 = 106413^2 + 34781^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 626672217 + ... + 626672236.

Almost surely, 2^12533444530 is an apocalyptic number.

12533444530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12533444530 is a deficient number, since it is larger than the sum of its proper divisors (10026755642).

12533444530 is a wasteful number, since it uses less digits than its factorization.

12533444530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253344460.

The product of its (nonzero) digits is 86400, while the sum is 34.

The spelling of 12533444530 in words is "twelve billion, five hundred thirty-three million, four hundred forty-four thousand, five hundred thirty".