12533402644505 has 8 divisors (see below), whose sum is σ = 15246111710472. Its totient is φ = 9889369757568.

The previous prime is 12533402644501. The next prime is 12533402644517. The reversal of 12533402644505 is 50544620433521.

It can be written as a sum of positive squares in 4 ways, for example, as 1798323912256 + 10735078732249 = 1341016^2 + 3276443^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12533402644505 - 2² = 12533402644501 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12533402644501) 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 7 ways as a sum of consecutive naturals, for example, 17169044354 + ... + 17169045083.

It is an arithmetic number, because the mean of its divisors is an integer number (1905763963809).

Almost surely, 2^{12533402644505} is an apocalyptic number.

It is an amenable number.

12533402644505 is a deficient number, since it is larger than the sum of its proper divisors (2712709065967).

12533402644505 is an equidigital number, since it uses as much as digits as its factorization.

12533402644505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34338089515.

The product of its (nonzero) digits is 1728000, while the sum is 44.

The spelling of 12533402644505 in words is "twelve trillion, five hundred thirty-three billion, four hundred two million, six hundred forty-four thousand, five hundred five".