5344878818549 has 2 divisors, whose sum is σ = 5344878818550. Its totient is φ = 5344878818548.

The previous prime is 5344878818509. The next prime is 5344878818621. The reversal of 5344878818549 is 9458188784435.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2976511716049 + 2368367102500 = 1725257^2 + 1538950^2 .

It is a cyclic number.

It is not a de Polignac number, because 5344878818549 - 2⁴⁰ = 4245367190773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5344878818509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2672439409274 + 2672439409275.

It is an arithmetic number, because the mean of its divisors is an integer number (2672439409275).

Almost surely, 2^{5344878818549} is an apocalyptic number.

It is an amenable number.

5344878818549 is a deficient number, since it is larger than the sum of its proper divisors (1).

5344878818549 is an equidigital number, since it uses as much as digits as its factorization.

5344878818549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1238630400, while the sum is 74.

The spelling of 5344878818549 in words is "five trillion, three hundred forty-four billion, eight hundred seventy-eight million, eight hundred eighteen thousand, five hundred forty-nine".