12445603533 has 32 divisors (see below), whose sum is σ = 20209536000. Its totient is φ = 7507004400.

The previous prime is 12445603529. The next prime is 12445603553. The reversal of 12445603533 is 33530654421.

12445603533 is a `hidden beast` number, since 1 + 2 + 4 + 45 + 603 + 5 + 3 + 3 = 666.

It is not a de Polignac number, because 12445603533 - 2² = 12445603529 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12445603553) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 36633 + ... + 161966.

It is an arithmetic number, because the mean of its divisors is an integer number (631548000).

Almost surely, 2^12445603533 is an apocalyptic number.

It is an amenable number.

12445603533 is a deficient number, since it is larger than the sum of its proper divisors (7763932467).

12445603533 is a wasteful number, since it uses less digits than its factorization.

12445603533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198830 (or 198824 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

The spelling of 12445603533 in words is "twelve billion, four hundred forty-five million, six hundred three thousand, five hundred thirty-three".