12533542849 has 2 divisors, whose sum is σ = 12533542850. Its totient is φ = 12533542848.

The previous prime is 12533542843. The next prime is 12533542897. The reversal of 12533542849 is 94824533521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12214670400 + 318872449 = 110520^2 + 17857^2 .

It is an emirp because it is prime and its reverse (94824533521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12533542849 - 2⁵ = 12533542817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12533542799 and 12533542808.

It is not a weakly prime, because it can be changed into another prime (12533542843) 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, 6266771424 + 6266771425.

It is an arithmetic number, because the mean of its divisors is an integer number (6266771425).

Almost surely, 2^12533542849 is an apocalyptic number.

It is an amenable number.

12533542849 is a deficient number, since it is larger than the sum of its proper divisors (1).

12533542849 is an equidigital number, since it uses as much as digits as its factorization.

12533542849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1036800, while the sum is 46.

The spelling of 12533542849 in words is "twelve billion, five hundred thirty-three million, five hundred forty-two thousand, eight hundred forty-nine".