5781328195549 has 2 divisors, whose sum is σ = 5781328195550. Its totient is φ = 5781328195548.

The previous prime is 5781328195471. The next prime is 5781328195553. The reversal of 5781328195549 is 9455918231875.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5780932583449 + 395612100 = 2404357^2 + 19890^2 .

It is a cyclic number.

It is not a de Polignac number, because 5781328195549 - 2¹³ = 5781328187357 is a prime.

It is a super-2 number, since 2×5781328195549² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5781328190549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2890664097774 + 2890664097775.

It is an arithmetic number, because the mean of its divisors is an integer number (2890664097775).

Almost surely, 2^{5781328195549} is an apocalyptic number.

It is an amenable number.

5781328195549 is a deficient number, since it is larger than the sum of its proper divisors (1).

5781328195549 is an equidigital number, since it uses as much as digits as its factorization.

5781328195549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864000, while the sum is 67.

The spelling of 5781328195549 in words is "five trillion, seven hundred eighty-one billion, three hundred twenty-eight million, one hundred ninety-five thousand, five hundred forty-nine".