13531201549 has 2 divisors, whose sum is σ = 13531201550. Its totient is φ = 13531201548.

The previous prime is 13531201417. The next prime is 13531201573. The reversal of 13531201549 is 94510213531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8904753225 + 4626448324 = 94365^2 + 68018^2 .

It is a cyclic number.

It is not a de Polignac number, because 13531201549 - 2²⁵ = 13497647117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13531201049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6765600774 + 6765600775.

It is an arithmetic number, because the mean of its divisors is an integer number (6765600775).

Almost surely, 2^13531201549 is an apocalyptic number.

It is an amenable number.

13531201549 is a deficient number, since it is larger than the sum of its proper divisors (1).

13531201549 is an equidigital number, since it uses as much as digits as its factorization.

13531201549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 34.

The spelling of 13531201549 in words is "thirteen billion, five hundred thirty-one million, two hundred one thousand, five hundred forty-nine".