135780196060549 has 2 divisors, whose sum is σ = 135780196060550. Its totient is φ = 135780196060548.

The previous prime is 135780196060529. The next prime is 135780196060591. The reversal of 135780196060549 is 945060691087531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122293894643649 + 13486301416900 = 11058657^2 + 3672370^2 .

It is an emirp because it is prime and its reverse (945060691087531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135780196060549 - 2¹⁹ = 135780195536261 is a prime.

It is a super-2 number, since 2×135780196060549² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135780196060529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67890098030274 + 67890098030275.

It is an arithmetic number, because the mean of its divisors is an integer number (67890098030275).

Almost surely, 2^{135780196060549} is an apocalyptic number.

It is an amenable number.

135780196060549 is a deficient number, since it is larger than the sum of its proper divisors (1).

135780196060549 is an equidigital number, since it uses as much as digits as its factorization.

135780196060549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48988800, while the sum is 64.

The spelling of 135780196060549 in words is "one hundred thirty-five trillion, seven hundred eighty billion, one hundred ninety-six million, sixty thousand, five hundred forty-nine".