12544133501 has 2 divisors, whose sum is σ = 12544133502. Its totient is φ = 12544133500.

The previous prime is 12544133489. The next prime is 12544133561. The reversal of 12544133501 is 10533144521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11408376100 + 1135757401 = 106810^2 + 33701^2 .

It is a cyclic number.

It is not a de Polignac number, because 12544133501 - 2¹⁸ = 12543871357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12544133561) 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 as a sum of consecutive naturals, namely, 6272066750 + 6272066751.

It is an arithmetic number, because the mean of its divisors is an integer number (6272066751).

Almost surely, 2^12544133501 is an apocalyptic number.

It is an amenable number.

12544133501 is a deficient number, since it is larger than the sum of its proper divisors (1).

12544133501 is an equidigital number, since it uses as much as digits as its factorization.

12544133501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 29.

The spelling of 12544133501 in words is "twelve billion, five hundred forty-four million, one hundred thirty-three thousand, five hundred one".