549298537065 has 24 divisors (see below), whose sum is σ = 952466565960. Its totient is φ = 292851803904.

The previous prime is 549298537063. The next prime is 549298537079. The reversal of 549298537065 is 560735892945.

549298537065 is a `hidden beast` number, since 5 + 4 + 9 + 2 + 98 + 537 + 0 + 6 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 61607211264 + 487691325801 = 248208^2 + 698349^2 .

It is not a de Polignac number, because 549298537065 - 2¹ = 549298537063 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 549298536993 and 549298537011.

It is not an unprimeable number, because it can be changed into a prime (549298537063) 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 in 23 ways as a sum of consecutive naturals, for example, 2113662 + ... + 2359271.

It is an arithmetic number, because the mean of its divisors is an integer number (39686106915).

Almost surely, 2^549298537065 is an apocalyptic number.

It is an amenable number.

549298537065 is a deficient number, since it is larger than the sum of its proper divisors (403168028895).

549298537065 is a wasteful number, since it uses less digits than its factorization.

549298537065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4475673 (or 4475670 counting only the distinct ones).

The product of its (nonzero) digits is 81648000, while the sum is 63.

The spelling of 549298537065 in words is "five hundred forty-nine billion, two hundred ninety-eight million, five hundred thirty-seven thousand, sixty-five".