13531183487849 has 2 divisors, whose sum is σ = 13531183487850. Its totient is φ = 13531183487848.

The previous prime is 13531183487839. The next prime is 13531183488071. The reversal of 13531183487849 is 94878438113531.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12907723223824 + 623460264025 = 3592732^2 + 789595^2 .

It is a cyclic number.

It is not a de Polignac number, because 13531183487849 - 2⁸ = 13531183487593 is a prime.

It is not a weakly prime, because it can be changed into another prime (13531183487839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6765591743924 + 6765591743925.

It is an arithmetic number, because the mean of its divisors is an integer number (6765591743925).

Almost surely, 2^{13531183487849} is an apocalyptic number.

It is an amenable number.

13531183487849 is a deficient number, since it is larger than the sum of its proper divisors (1).

13531183487849 is an equidigital number, since it uses as much as digits as its factorization.

13531183487849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69672960, while the sum is 65.

The spelling of 13531183487849 in words is "thirteen trillion, five hundred thirty-one billion, one hundred eighty-three million, four hundred eighty-seven thousand, eight hundred forty-nine".