549700259209 has 2 divisors, whose sum is σ = 549700259210. Its totient is φ = 549700259208.

The previous prime is 549700259197. The next prime is 549700259287. The reversal of 549700259209 is 902952007945.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 478372806025 + 71327453184 = 691645^2 + 267072^2 .

It is a cyclic number.

It is not a de Polignac number, because 549700259209 - 2⁷ = 549700259081 is a prime.

It is not a weakly prime, because it can be changed into another prime (549700209209) 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, 274850129604 + 274850129605.

It is an arithmetic number, because the mean of its divisors is an integer number (274850129605).

Almost surely, 2^549700259209 is an apocalyptic number.

It is an amenable number.

549700259209 is a deficient number, since it is larger than the sum of its proper divisors (1).

549700259209 is an equidigital number, since it uses as much as digits as its factorization.

549700259209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2041200, while the sum is 52.

The spelling of 549700259209 in words is "five hundred forty-nine billion, seven hundred million, two hundred fifty-nine thousand, two hundred nine".