549648839944 has 16 divisors (see below), whose sum is σ = 1030876559100. Its totient is φ = 274748424192.

The previous prime is 549648839941. The next prime is 549648840017. The reversal of 549648839944 is 449938846945.

It can be written as a sum of positive squares in 2 ways, for example, as 544440331044 + 5208508900 = 737862^2 + 72170^2 .

It is a super-2 number, since 2×549648839944² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (549648839941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9468729 + ... + 9526600.

Almost surely, 2^549648839944 is an apocalyptic number.

It is an amenable number.

549648839944 is a deficient number, since it is larger than the sum of its proper divisors (481227719156).

549648839944 is a wasteful number, since it uses less digits than its factorization.

549648839944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18998952 (or 18998948 counting only the distinct ones).

The product of its digits is 1074954240, while the sum is 73.

The spelling of 549648839944 in words is "five hundred forty-nine billion, six hundred forty-eight million, eight hundred thirty-nine thousand, nine hundred forty-four".