12503844533 has 2 divisors, whose sum is σ = 12503844534. Its totient is φ = 12503844532.

The previous prime is 12503844517. The next prime is 12503844553. The reversal of 12503844533 is 33544830521.

12503844533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8522613124 + 3981231409 = 92318^2 + 63097^2 .

It is a cyclic number.

It is not a de Polignac number, because 12503844533 - 2⁴ = 12503844517 is a prime.

It is a super-2 number, since 2×12503844533² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12503844503) 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 as a sum of consecutive naturals, namely, 6251922266 + 6251922267.

It is an arithmetic number, because the mean of its divisors is an integer number (6251922267).

Almost surely, 2^12503844533 is an apocalyptic number.

It is an amenable number.

12503844533 is a deficient number, since it is larger than the sum of its proper divisors (1).

12503844533 is an equidigital number, since it uses as much as digits as its factorization.

12503844533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 12503844533 in words is "twelve billion, five hundred three million, eight hundred forty-four thousand, five hundred thirty-three".